Supporting assembly suitable for aero-engine bearing

Abstract

The utility model relates to a supporting assembly suitable for an aero-engine bearing, which comprises a bottom plate, a shell, a lower bearing, an upper bearing and a rotating shaft, and is technically characterized in that a damping assembly is arranged on the upper surface of the bottom plate, a floating supporting table is arranged above the damping assembly, and the shell is fixed in the middle of the upper surface of the floating supporting table; a plurality of telescopic supporting columns are evenly arranged on the upper surface of the floating supporting table around the shell, radial adjustable clamping hands are arranged at the tops of the telescopic supporting columns, radial long holes are formed in the radial adjustable clamping hands, studs penetrating through the radial long holes are arranged on the top faces of the telescopic supporting columns, and locking nuts and fixing nuts are arranged on the upper portions of the studs. A plurality of connecting pieces are evenly arranged on the edge of the floating supporting table, connecting lugs in one-to-one correspondence with the connecting pieces are evenly arranged on the outer wall of the upper bearing, supporting legs are hinged to the connecting lugs, supporting arms hinged to the connecting pieces are arranged on the supporting legs, and wear-resisting air wheels are fixed to the lower ends of the supporting legs. The utility model has the advantages of flexible use, wider application range, and better supporting and damping effects of the supporting legs.

Description

Technical Field

[0001] The utility model relates to the technical field of aero-engine bearings, and particularly relates to a support assembly suitable for aero-engine bearings. Background Art

[0002] To avoid catastrophic consequences, an aero-engine usually requires increasing the structural strength of each component on the engine transmission path, such as the rotor support structure, the load-bearing casing, the installation system, etc., to prevent key components from being damaged under FBO loads. Due to the increasing diameter of the fan blades of the engine, the unbalanced load is also increasing, so the requirement for the stability of the bearing support structure is getting higher and higher.

[0003] CN 221401404 U discloses a support assembly suitable for aero-engine bearings, which includes an outer bearing ring. The outer wall of the outer bearing ring is inserted with a rotating shaft. One side of the rotating shaft penetrates through a support leg. The lower part of the outer bearing ring is inserted with an inner bearing ring. The lower part of the inner bearing ring is installed with a low-pressure shaft through screws. The outer wall of the low-pressure shaft is attached to a housing. The outer wall of the housing is welded with a fixing plate. The lower part of the support leg is attached to a bottom plate. One side of the support leg penetrates through a movable shaft through a pin; the fixing plate includes a cylinder. The improved support assembly has pneumatic shock absorption to reduce the vibration amplitude, and at the same time uses a buffer structure and a shock absorber for shock absorption. However, there are still the following problems: 1. The inner diameter size of the fixing plate is fixed, and it is not flexible to use; 2. The lower end of the support leg directly contacts the bottom of the chute on the bottom plate, which is prone to wear in a vibration environment and the shock absorption effect is not good. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a support assembly suitable for aero-engine bearings with a more reasonable structure and more reliable use to solve the above problems, which is flexible to use, has a wider application range, and at the same time has better support and shock absorption effects of the support legs.

[0005] The technical solution of the utility model is as follows:

[0006] A support assembly applicable to an aeroengine bearing, comprising a bottom plate, a housing located above the bottom plate, a lower bearing fixed to the housing, an upper bearing concentric with the lower bearing, and a rotating shaft connected between the upper and lower bearings. The technical key points are as follows: A shock-absorbing assembly is provided on the upper surface of the bottom plate, a floating support platform is provided above the shock-absorbing assembly, the housing is fixed to the middle of the upper surface of the floating support platform, a plurality of telescopic support columns are evenly arranged around the housing on the upper surface of the floating support platform, a radially adjustable gripper for clamping the housing is provided at the top of the telescopic support column, a radially long hole is provided on the radially adjustable gripper, a stud passing through the radially long hole is provided on the top surface of the telescopic support column, a locking nut and a fixing nut are provided on the upper part of the stud, a plurality of connecting pieces are evenly arranged at the edge of the floating support platform, connecting ears corresponding to the connecting pieces one by one are evenly arranged on the outer wall of the upper bearing, a support leg is hinged to the connecting ear, a support arm hinged to the connecting piece is provided on the support leg, a wheel axle is provided at the lower end of the support leg, and a wear-resistant air wheel is fixed by the wheel axle.

[0007] For the above-mentioned support assembly applicable to an aeroengine bearing, a radial sliding groove corresponding to the support leg one by one is provided at the edge of the bottom plate, and the wear-resistant air wheel is located in the radial sliding groove.

[0008] For the above-mentioned support assembly applicable to an aeroengine bearing, the radially adjustable gripper is provided with an arc-shaped clamping surface matched with the housing, and a buffer pad is provided on the arc-shaped clamping surface.

[0009] The beneficial effects of the present utility model are as follows:

[0010] 1. Multiple radially adjustable grippers are used to replace the fixing plate in the prior art. The radially adjustable gripper changes the horizontal position by using the radially long hole, so as to realize the clamping and fixing of different housings, which is more convenient and flexible to use and has a wider adaptation range.

[0011] 2. When vibration occurs, on the one hand, the wear-resistant air wheel avoids the abrasion of the support leg, and on the other hand, it achieves the purpose of shock absorption. Description of the Drawings

[0012] Figure 1 is a structural schematic diagram of the present utility model;

[0013] Figure 2 is Figure 1 the distribution schematic diagram of each radially adjustable gripper in

[0014] In the figure: 1. upper bearing, 2. connecting ear, 3. rotating shaft, 4. support leg, 5. lower bearing, 6. housing, 7. radially adjustable gripper, 8. fixing nut, 9. radially long hole, 10. support arm, 11. wear-resistant air wheel, 12. radial sliding groove, 13. bottom plate, 14. shock-absorbing assembly, 15. floating support platform, 16. connecting piece, 17. telescopic support column, 18. locking nut, 19. stud, 20. buffer pad. Detailed implementation mode

[0015] The present utility model will be described in detail according to the accompanying drawings of the specification.

[0016] As Figure 1 、 Figure 2 shown, the support assembly applicable to an aeroengine bearing includes a bottom plate 13, a housing 6 located above the bottom plate 13, a lower bearing 5 fixed to the housing 6, an upper bearing 1 concentric with the lower bearing 5, and a rotating shaft 3 connected between the upper and lower bearings.

[0017] Wherein, a shock absorption assembly 14 is provided on the upper surface of the bottom plate 13, and a floating support platform 15 is provided above the shock absorption assembly 14. The housing 6 is fixed to the middle of the upper surface of the floating support platform 15, and a plurality of telescopic support columns 17 are evenly arranged around the housing 6 on the upper surface of the floating support platform 15. A radially adjustable gripper 7 for clamping the housing 6 is provided at the top of the telescopic support column 17. A radial long hole 9 is provided on the radially adjustable gripper 7, a stud 19 passing through the radial long hole 9 is provided on the top surface of the telescopic support column 17, and a locking nut 18 and a fixing nut 8 are provided on the upper part of the stud 19. The radially adjustable gripper 7 is provided with an arc-shaped clamping surface matching the housing 6, and a buffer pad 20 is provided on the arc-shaped clamping surface.

[0018] A plurality of connecting pieces 16 are evenly arranged at the edge of the floating support platform 15. Connecting ears 2 corresponding to the connecting pieces 16 one by one are evenly arranged on the outer wall of the upper bearing 1. A support leg 4 is hinged to the connecting ear 2. An arm 10 hinged to the connecting piece 16 is provided on the support leg 4. A wheel shaft is provided at the lower end of the support leg 4, and a wear-resistant air wheel 11 is fixed by the wheel shaft. In this embodiment, a radial chute 12 corresponding to the support leg 4 one by one is provided at the edge of the bottom plate 13, and the wear-resistant air wheel 11 is located in the radial chute 12.

[0019] When vibrations are generated in the working environment, both the shock absorption assembly 14 and the wear-resistant air wheel 11 play a role in shock absorption.

[0020] The above has described the embodiments of the present utility model in detail, but the above content is only the preferred embodiment of the present utility model and cannot be considered as limiting the implementation scope of the present utility model. All equal changes and improvements made within the scope of the creation of the present utility model shall still fall within the scope covered by this patent.

Claims

1. A support assembly applicable to an aeroengine bearing, comprising a bottom plate, a housing located above the bottom plate, a lower bearing fixed to the housing, an upper bearing concentric with the lower bearing, and a rotating shaft connected between the upper and lower bearings, characterized in that: A shock-absorbing component is provided on the upper surface of the bottom plate. Above the shock-absorbing component, there is a floating support platform. The outer shell is fixed to the middle of the upper surface of the floating support platform. A plurality of telescopic support columns are evenly arranged around the outer shell on the upper surface of the floating support platform. A radially adjustable gripper for clamping the outer shell is provided at the top of the telescopic support column. A radial long hole is provided on the radially adjustable gripper. A stud passing through the radial long hole is provided on the top surface of the telescopic support column. A locking nut and a fixing nut are provided on the upper part of the stud. A plurality of connecting pieces are evenly arranged at the edge of the floating support platform. Connecting ears corresponding to the connecting pieces one by one are evenly arranged on the outer wall of the upper bearing. A support leg is hinged to the connecting ear. An arm articulated with the connecting piece is provided on the support leg. A wheel axle is provided at the lower end of the support leg, and a wear-resistant air wheel is fixed by means of the wheel axle.

2. The support assembly applicable to an aeroengine bearing according to claim 1, characterized in that: Radial chutes corresponding to the support legs one by one are provided at the edge of the bottom plate. The wear-resistant air wheels are located in the radial chutes.

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