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 utility model relates to unmanned aerial vehicle landing gear system technical field, especially in a kind of gear locking bearing device of adjustable gap. BACKGROUND

[0002] At present, the structure of gear axial flared locking has been installed on unmanned aerial vehicle landing gear system and used, with the continuous improvement of user's life requirement to product. The locking force of traditional gear locking mechanism is small, and bearing will be damaged due to vibration after long time work. Based on this, the existing product structure cannot meet the user's demand, and needs to be improved and optimized. SUMMARY

[0003] To solve the problems mentioned in the above background art, the utility model provides a kind of gear locking bearing device of adjustable gap.

[0004] The utility model discloses the following technical scheme: a kind of gear locking bearing device of adjustable gap, including locking nut, gear, wave spring, adjusting washer, bearing, bearing seat, bushing, rotor assembly and copper pad, bearing and bushing are sleeved on the shaft of rotor assembly, copper pad is installed in bearing seat, bushing is located between two bearings and with two bearing inner rings abuts, copper pad and the outer ring of bearing abut, adjusting washer, wave spring and gear are successively sleeved on the shaft of rotor assembly, adjusting washer and bearing abut, using locking nut and rotor assembly thread cooperation locking.

[0005] Further, the two bearings and bearing seat are each equipped with copper pad, the gap of bearing is adjusted by adjusting the length of bushing and the thickness of copper pad.

[0006] Further, the rotor assembly and gear are fixed by hexagonal cooperation connection.

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

[0008] Beneficial effects: compared with prior art, the gear locking bearing device of adjustable gap provided by the utility model is reasonable in design, adopts hexagonal cooperation connection, wave spring is used for auxiliary anti-loosening limiting, ensures that the outer ring of bearing is not subjected to axial force while being subjected to shock absorption and noise reduction treatment, and the locking form is firm and reliable and facilitates the adjustment of the gap between bearing and bearing seat. BRIEF DESCRIPTION OF DRAWINGS

[0009] Fig. 1 It is the whole structure schematic view of the utility model;

[0010] Fig. 2 It is the rotor assembly structure schematic view of the utility model;

[0011] In the diagram: 1-locking nut, 2-gear, 3-wave spring, 4-adjusting washer, 5-bearing, 6-bearing housing, 7-shield, 8-rotor assembly, 9-copper pad. Detailed Implementation

[0012] like Figs. 1-2 As shown, an adjustable clearance gear-locking bearing device includes a locking 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 pad 9. The bearing 5 and the bushing 7 are mounted on the shaft of the rotor assembly 8. The copper pad 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 bushing 7 ensures that there is a gap between the bearing 5 and the bearing housing 6. The copper pad 9 abuts against the outer ring of the bearing 5. During the movement of the bearing 5, the elastic support of the copper pad 9 has a shock-absorbing effect. The adjusting washer 4, the wave spring 3, and the gear 2 are sequentially mounted on the shaft of the rotor assembly 8. The adjusting washer 4 abuts against the bearing 5. The locking nut 1 is locked with the rotor assembly 8 by thread engagement. Since the locking nut 1 is a flared locking method, there is a risk that the thread clearance will increase after the device has been running for a long time. The wave spring 3 has elasticity in the axial direction, which can effectively prevent the thread clearance from increasing.

[0013] Both bearings 5 ​​and bearing housings 6 are provided with copper pads 9. The clearance of bearings 5 ​​is adjusted by adjusting the length of bushing 7 and the thickness of copper pad 9. The rotor assembly 8 and gear 2 are connected and fixed with a hexagonal fit to ensure that gear 2 and rotor assembly 8 rotate synchronously. It can also completely eliminate the clearance between gear 2 and rotor assembly 8, so that gear 2 will not have radial movement when meshing with external gear, effectively avoiding damage to gear 2. The copper pad 9 is annular and its size matches the outer ring of bearing 5, making it easy to install.

[0014] During installation, first, install one bearing 5 and bushing 7 onto the shaft of the rotor assembly 8, so that the bearing 5 abuts against the shoulder end face of the rotor assembly 8. Insert the copper washer 9 into the bearing housing 6. Then, install the rotor assembly 8 with bearing 5 and bushing 7 into the bearing housing 6. Next, install another bearing 5 into the rotor assembly 8 and bearing housing 6. Then, install the adjusting washer 4, wave spring 3, and gear 2 onto the shaft of the rotor assembly 8 in sequence. The adjusting washer 4 abuts against the bearing 5. Use the lock nut 1 to lock it with the threaded engagement of the rotor assembly 8. Use the copper washer 9 and bushing 7 to adjust the gap between the bearing 5 and the bearing housing 6. If the bushing 7 is too long, it can be ground. The copper washer 9 can be of appropriate thickness as needed to ensure the gap between the bearing 5 and the bearing housing 6. After installation, use a tool to enlarge the hole of the lock nut 1 to achieve the purpose of locking and preventing loosening.

[0015] The above merely describes a preferred embodiment of the present application, and the protection scope of the present application is not limited thereto, and any skilled person in the art, according to the technical scheme and the inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. An adjustable clearance gear lock bearing device, characterized by: It comprises 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 copper pad (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), and the locking nut (1) is threadedly connected with the rotor assembly (8) and locked.

2. An adjustable clearance gear lock bearing device according to claim 1, wherein: The two bearings (5) and the bearing seat (6) are provided with copper pads (9), and the gap of the bearing (5) is adjusted by adjusting the length of the bushing (7) and the thickness of the copper pad (9).

3. The adjustable clearance gear lock bearing device of claim 1, wherein: The rotor assembly (8) and the gear (2) are connected and fixed by hexagonal cooperation.

4. The adjustable clearance gear lock bearing device of claim 1, wherein: The copper pad (9) is annular and matches the size of the outer ring of the bearing (5).

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