Rotorcraft propeller hub system driving device

Abstract

The utility model discloses a rotorcraft propeller hub system driving device in the technical field of rotorcrafts, which comprises a circular mounting plate, a steering engine mounted at the bottom of the mounting plate, a bearing arranged in the middle of the mounting plate, a bearing hole formed in the middle of the mounting plate, a bearing end cover mounted at the top of the mounting plate and used for compressing the bearing, and a bearing end cover mounted at the bottom of the mounting plate. According to the utility model, the bearing end cover is additionally arranged, the bearing end cover is fixedly connected with the mounting plate, and the outer ring of the bearing is completely covered by the bearing end cover basically, so that the defects in the prior art are overcome, and the mounting process of the bearing is better met; meanwhile, the installation form of the steering engine is improved, a bottom plate is omitted, assembly is simplified, material cost is reduced, and the steering engine can be used in rotorcrafts.

Description

Technical Field

[0001] The utility model relates to the technical field of rotorcraft, in particular to a rotorcraft hub system. Background Art

[0002] The rotorcraft hub system is an intermediate component used to install rotor blades and connect the rotor to the helicopter transmission system and control system. As shown in the figure, the rotorcraft hub system driving device in the prior art includes: a mounting plate 100, three connecting plates 701 are installed on the bottom periphery of the mounting plate 100, a bottom plate 702 is installed on the bottom of the connecting plate 701, and a steering gear 200 is installed between the mounting plate 100 and the bottom plate 703; in addition, a bearing hole is provided in the middle of the mounting plate 100, and a bearing 300 is provided in the bearing hole, and the bearing 300 is partially blocked in the bearing hole by three bolts 703 and washers 704. Its shortcomings are: part of the area of ​​the washer 703 blocks the outer ring of the bearing, so that the bearing is unevenly stressed and insufficiently limited; in addition, the installation of the steering gear 200 is completed by the cooperation of the bottom plate 702 and the connecting plate 701, and its assembly structure is relatively large. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a rotorcraft hub system drive device, which solves the problem of unreliable bearing installation of the prior drive device and also solves the problem of multiple assembly structures of the prior steering gear.

[0004] The purpose of the utility model is achieved as follows: a rotorcraft hub system drive device comprises a circular mounting plate, a servo is installed at the bottom of the mounting plate, a bearing is provided in the middle of the mounting plate, a bearing hole is opened in the middle of the mounting plate, the bearing is arranged in the bearing hole, and a bearing end cover for pressing the bearing is installed on the top of the mounting plate.

[0005] Furthermore, the bottom of the mounting plate is fixedly connected to a vertical plate, and the steering gear is mounted on the vertical plate.

[0006] Furthermore, there are three vertical plates, which are evenly distributed at the bottom of the mounting plate.

[0007] Furthermore, a support plate is installed on the bottom periphery of the mounting plate.

[0008] Furthermore, three support plates are provided and are evenly distributed on the bottom of the mounting plate.

[0009] Furthermore, a plurality of weight-reducing holes are provided on the mounting plate.

[0010] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention adds a bearing end cover, which is connected and fixed to the mounting plate. The bearing end cover basically covers the entire outer ring of the bearing, thereby solving the previous deficiencies and being more in line with the bearing installation process; at the same time, the installation form of the servo is improved, the base plate is eliminated, the assembly is simplified and the material cost is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0012] Figure 1 It is a schematic diagram of the structure of the utility model.

[0013] Figure 2 It is a schematic diagram of the installation plate structure in the utility model.

[0014] Figure 3 This is a cross-sectional view of the utility model.

[0015] Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0016] Figure 5 This is a schematic diagram of the installation of the steering gear in the utility model.

[0017] Figure 6 It is a schematic diagram of the structure of a driving device in the prior art.

[0018] Among them, 100 mounting plate, 101 bearing hole, 102 inner ring plate, 103 outer ring plate, 104 rib plate, 200 servo, 300 bearing, 400 bearing end cover, 500 vertical plate, 600 support plate, 701 connecting plate, 702 bottom plate, 703 bolts, 704 washers. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example

[0020] like Figure 1-5A rotorcraft hub system drive device shown includes a circular mounting plate 100, a servo 200 is installed at the bottom of the mounting plate 100, a bearing 300 is provided in the middle of the mounting plate 100, a bearing hole 101 is opened in the middle of the mounting plate 100, the bearing 300 is arranged in the bearing hole 101, and a bearing end cover 400 for pressing the bearing 300 is installed on the top of the mounting plate 100.

[0021] Specifically, the mounting plate 100 includes an outer ring plate 103 and an inner ring plate 102. The outer ring plate 103 and the inner ring plate 102 are connected via three ribs 104. Weight-reducing holes are formed in the remaining areas. The three ribs 104 are evenly arranged. The bearing hole 101 is opened in the center of the inner ring plate 102. The bearing hole 101 adopts a stepped hole. The bearing end cover 400 is fixed and installed with three bolts and washers. The bearing end cover 400 is an annular structure.

[0022] Furthermore, a vertical plate 500 is fixedly connected to the bottom of the mounting plate 100 , and the steering gear 200 is mounted on the vertical plate 500 . There are three vertical plates 500 , which are evenly distributed at the bottom of the mounting plate 100 .

[0023] Specifically, three vertical plates 500 are installed at the bottom of the rib plate 104 by bolts, nuts and cotter pins. The upper part of the vertical plate 500 is provided with slots for matching nuts and cotter pins. The servo 200 is installed at the middle part of the vertical plate 500 by bolts. Weight reduction holes are provided at the upper and lower parts of the vertical plate 500.

[0024] Furthermore, a support plate 600 is installed on the bottom periphery of the mounting plate 100 , and three support plates 600 are provided and evenly distributed on the bottom of the mounting plate 100 .

[0025] Specifically, the support plate 600 is installed on the bottom periphery of the outer ring plate 103. The support plate 600 adopts a frame structure and is arc-shaped as a whole, serving as a connecting piece for installing other components.

[0026] The above embodiments are only used to help understand the method and core idea of ​​the utility model. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made to the utility model without departing from the principle of the utility model, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A rotorcraft hub system drive device, comprising a circular mounting plate (100), a steering gear (200) being mounted at the bottom of the mounting plate (100), and a bearing (300) being disposed in the middle of the mounting plate (100), characterized in that: A bearing hole (101) is provided in the middle of the mounting plate (100), the bearing (300) is arranged in the bearing hole (101), and a bearing end cover (400) is installed on the top of the mounting plate (100) for pressing the bearing (300).

2. A rotorcraft hub system drive device according to claim 1, characterized in that: The bottom of the mounting plate (100) is fixedly connected to a vertical plate (500), and the steering gear (200) is mounted on the vertical plate (500).

3. A rotorcraft hub system drive device according to claim 2, characterized in that: The vertical plates (500) are provided in three numbers and are evenly distributed on the bottom of the mounting plate (100).

4. A rotorcraft hub system drive device according to any one of claims 1 to 3, characterized in that: A support plate (600) is also installed on the bottom periphery of the installation plate (100).

5. A rotorcraft hub system driving device according to claim 4, characterized in that: Three support plates (600) are provided and are evenly distributed on the bottom of the mounting plate (100).

6. A rotorcraft hub system drive device according to claim 1 or 2, characterized in that: The mounting plate (100) is provided with a plurality of weight-reducing holes.

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