Gap-adjustable gear locking bearing device

Abstract

A gear locking bearing device capable of adjusting a gap comprises a locking nut, a gear, a wave spring, an adjusting washer, bearings, a bearing seat, a bush, a rotor assembly and a copper pad, the bearings and the bush are arranged on a shaft of the rotor assembly in a sleeving mode, the copper pad is installed in the bearing seat, the bush is located between the two bearings and abuts against inner rings of the two bearings, and the gear is arranged on the bearing seat. The bush can guarantee that a gap is reserved between the bearing and the bearing seat, the copper pad abuts against the outer ring of the bearing, the elastic support of the copper pad has a damping effect in the movement process of the bearing, the adjusting washer, the wave spring and the gear are sequentially arranged on a shaft of the rotor assembly in a sleeving mode, the adjusting washer abuts against the bearing, and the locking nut and the rotor assembly are locked in a threaded fit mode. Due to the fact that the locking nut is in a flaring locking mode, after the device operates for a long time, the risk that a thread gap becomes large exists, the wave spring has elastic force in the axial direction, the thread gap can be effectively prevented from being large, the locking mode is firm and reliable, and the gap between the bearing and the bearing seat is convenient to adjust.

Description

Technical Field

[0001] The present invention relates to the technical field of unmanned aerial vehicle landing gear systems, and particularly to a gear locking bearing device with adjustable clearance. Background Art

[0002] Currently, a gear axial flaring locking structure has been installed and used in the unmanned aerial vehicle landing gear system. As users' requirements for product lifespan continue to increase. The traditional gear locking mechanism has a small locking force, and the bearing will be damaged due to vibration after long-term operation. Based on this, the existing product structure can no longer meet the needs of users and needs to be improved and optimized. Summary of the Invention

[0003] To solve the problems mentioned in the above background art, the present invention provides a gear locking bearing device with adjustable clearance.

[0004] The present invention discloses the following technical solutions: A gear locking bearing device with adjustable clearance, including a locking nut, a gear, a wave spring, an adjusting washer, a bearing, a bearing seat, a bushing, a rotor assembly, and a copper pad. The bearing and the bushing are sleeved on the shaft of the rotor assembly, the copper pad is installed in the bearing seat, the bushing is located between the two bearings and abuts against the inner rings of the two bearings, the copper pad abuts against the outer ring of the bearing, the adjusting washer, the wave spring, and the gear are sequentially sleeved on the shaft of the rotor assembly, the adjusting washer abuts against the bearing, and the locking nut is used to lock the rotor assembly by thread fitting.

[0005] Further, copper pads are provided between the two bearings and the bearing seat, and the clearance of the bearing is adjusted by adjusting the length of the bushing and the thickness of the copper pad.

[0006] Further, the rotor assembly and the gear are fixedly connected by hexagonal fitting.

[0007] Further, the copper pad is annular and its size matches the outer ring of the bearing.

[0008] Advantageous Effects: Compared with the prior art, a gear locking bearing device with adjustable clearance provided by the present invention has a reasonable design, adopts hexagonal fitting connection, and the wave spring is used for auxiliary anti-loosening limit. While ensuring that the outer ring of the bearing is not subject to axial force, shock absorption and noise reduction are carried out. The locking form is firm and reliable and it is convenient to adjust the clearance between the bearing and the bearing seat. Brief Description of the Drawings

[0009] Figure 1 is the overall structural schematic diagram of the present invention; Figure 2 is the structural schematic diagram of the rotor assembly of the present invention; In the figure: 1 - locking nut, 2 - gear, 3 - wave spring, 4 - adjusting washer, 5 - bearing, 6 - bearing seat, 7 - bushing, 8 - rotor assembly, 9 - copper pad. Detailed implementation mode

[0010] As Figures 1 to 2 shown, the gear locking bearing device with adjustable clearance includes a locking nut 1, a gear 2, a wave spring 3, an adjusting washer 4, a bearing 5, a bearing seat 6, a bushing 7, a rotor assembly 8 and a copper pad 9. The bearing 5 and the bushing 7 are sleeved on the shaft of the rotor assembly 8, the copper pad 9 is installed in the bearing seat 6, the bushing 7 is located between the two bearings 5 and abuts against the inner rings of the two bearings 5. The bushing 7 can ensure that there is a clearance between the bearing 5 and the bearing seat 6. The copper pad 9 abuts against the outer ring of the bearing 5. The elastic support of the copper pad 9 has a damping effect during the movement of the bearing 5. The adjusting washer 4, the wave spring 3 and the gear 2 are sequentially sleeved on the shaft of the rotor assembly 8. The adjusting washer 4 abuts against the bearing 5, and the locking nut 1 is used to lock with the rotor assembly 8 by thread fitting. Since the locking nut 1 is in a flared locking mode, there is a risk that the thread clearance will become larger after the device operates for a long time. The wave spring 3 has elastic force in the axial direction, which can effectively prevent the thread clearance from becoming larger.

[0011] Copper pads 9 are provided between the two bearings 5 and the bearing seat 6, and the clearance of the bearing 5 is adjusted by adjusting the length of the bushing 7 and the thickness of the copper pad 9; the rotor assembly 8 and the gear 2 are fixedly connected by a hexagonal fit to ensure that the gear 2 and the rotor assembly 8 rotate synchronously, and the clearance between the gear 2 and the rotor assembly 8 can also be completely eliminated, so that there will be no radial runout when the gear 2 meshes with an external gear, effectively avoiding damage to the gear 2; the copper pad 9 is annular, and its size matches the outer ring of the bearing 5, which is convenient for installation.

[0012] During installation, first sleeve a bearing 5 and a bushing 7 on the shaft of the rotor assembly 8 so that the bearing 5 abuts against the shoulder end face of the shaft of the rotor assembly 8, install the copper pad 9 into the bearing seat 6, install the rotor assembly 8 equipped with the bearing 5 and the bushing 7 into the bearing seat 6, then install the other bearing 5 into the rotor assembly 8 and the bearing seat 6, sequentially sleeve the adjusting washer 4, the wave spring 3 and the gear 2 on the shaft of the rotor assembly 8. The adjusting washer 4 abuts against the bearing 5, and the locking nut 1 is used to lock with the rotor assembly 8 by thread fitting. Use the copper pad 9 and the bushing 7 to adjust the clearance between the bearing 5 and the bearing seat 6. If the length of the bushing 7 is too long, it can be ground, and the copper pad 9 with a suitable thickness can be used according to needs to ensure the clearance between the bearing 5 and the bearing seat 6. After installation, use a tooling to ream the locking nut 1 to achieve the purpose of locking and anti-loosening.

[0013] The above is only a preferred detailed implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A gear locking bearing device with adjustable clearance, characterized in that: It includes a lock nut (1), a gear (2), a wave spring (3), an adjusting washer (4), a bearing (5), a bearing housing (6), a bushing (7), a rotor assembly (8) and a copper gasket (9). The bearing (5) and the bushing (7) are sleeved on the shaft of the rotor assembly (8). The copper gasket (9) is installed in the bearing housing (6). The bushing (7) is located between the two bearings (5) and abuts against the inner rings of the two bearings (5). The copper gasket (9) abuts against the outer ring of the bearing (5). The adjusting washer (4), the wave spring (3) and the gear (2) are sequentially sleeved on the shaft of the rotor assembly (8). The adjusting washer (4) abuts against the bearing (5). The lock nut (1) is used to lock with the rotor assembly (8) by thread fitting.

2. The adjustable clearance gear locking bearing device according to claim 1, wherein: Copper gaskets (9) are provided between the two bearings (5) and the bearing housing (6). The clearance of the bearing (5) is adjusted by adjusting the length of the bushing (7) and the thickness of the copper gasket (9).

3. The adjustable clearance gear locking bearing device according to claim 1, characterized in that: The rotor assembly (8) and the gear (2) are fixedly connected by a hexagonal fit.

4. The adjustable clearance gear locking bearing device according to claim 1, characterized in that: The copper gasket (9) is annular and its size matches the outer ring of the bearing (5).

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