CN111099015A - Unmanned helicopter propeller hub and unmanned helicopter - Google Patents
Unmanned helicopter propeller hub and unmanned helicopter Download PDFInfo
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- CN111099015A CN111099015A CN201911222167.1A CN201911222167A CN111099015A CN 111099015 A CN111099015 A CN 111099015A CN 201911222167 A CN201911222167 A CN 201911222167A CN 111099015 A CN111099015 A CN 111099015A
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- Prior art keywords
- hub
- shaped split
- unmanned helicopter
- rubber
- main shaft
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C27/00—Rotorcraft; Rotors peculiar thereto
- B64C27/32—Rotors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C11/00—Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft
- B64C11/02—Hub construction
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C27/00—Rotorcraft; Rotors peculiar thereto
- B64C27/04—Helicopters
- B64C27/08—Helicopters with two or more rotors
- B64C27/10—Helicopters with two or more rotors arranged coaxially
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64U—UNMANNED AERIAL VEHICLES [UAV]; EQUIPMENT THEREFOR
- B64U10/00—Type of UAV
- B64U10/10—Rotorcrafts
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- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
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Abstract
The invention discloses an unmanned helicopter hub and an unmanned helicopter. The upper T-shaped split hub and the upper flapping rubber are arranged on the inner main shaft, and the lower T-shaped split hub and the lower flapping rubber are arranged on the outer main shaft; the inner main shaft and the outer main shaft are respectively provided with two boss mounting surfaces which face each other, the upper T-shaped split hub is connected to the boss mounting surface of the inner main shaft through an upper hub screw rod, and the lower T-shaped split hub is connected to the boss mounting surface of the outer main shaft through a lower hub screw rod; the upper T-shaped split hubs are connected to form an integral upper hub, the lower T-shaped split hubs are connected to form an integral lower hub, and the hubs are integrally swung around a hub screw. The unmanned helicopter hub can reduce the maintenance cost of the hub system.
Description
Technical Field
The invention relates to the technical field of unmanned helicopters, in particular to an unmanned helicopter hub and an unmanned helicopter.
Background
Rotor hub systems are key components of helicopters that determine the flight characteristics of the helicopter and even affect flight stability.
At present, in current unmanned helicopter hub, generally adopt integral hub structure, there are the problem such as waving rubber life-span weak point, system maintenance cost height.
Therefore, there is a need to design a new unmanned helicopter hub to increase the life of the flap rubber and reduce the cost of system maintenance.
Disclosure of Invention
It is an object of embodiments of the present invention to provide a new solution for an unmanned helicopter hub with low maintenance costs.
According to one aspect of the invention, an unmanned helicopter hub is provided and is characterized by comprising an inner main shaft, an outer main shaft, an upper T-shaped split hub, a lower T-shaped split hub, upper flapping rubber and lower flapping rubber.
The upper T-shaped split hub and the upper flapping rubber are arranged on the inner main shaft, and the lower T-shaped split hub and the lower flapping rubber are arranged on the outer main shaft;
the inner main shaft and the outer main shaft are respectively provided with two boss mounting surfaces which face each other, the upper T-shaped split hub is connected to the boss mounting surface of the inner main shaft through an upper hub screw rod, and the lower T-shaped split hub is connected to the boss mounting surface of the outer main shaft through a lower hub screw rod;
the upper T-shaped split hubs are connected to form an integral upper hub, the lower T-shaped split hubs are connected to form an integral lower hub, and the hubs are integrally swung around a hub screw.
Optionally, the upper and lower T-shaped split hubs are respectively provided with a mounting groove, the upper flapping rubber is embedded in the mounting groove of the upper T-shaped split hub, and an inner side wall of the upper flapping rubber is attached to the inner spindle.
Optionally, the lower flapping rubber is embedded in a mounting groove of the lower T-shaped split hub, and an inner side wall of the lower flapping rubber is attached to the outer spindle.
Optionally, the rotor comprises a graphite copper sleeve, and the graphite copper sleeve is arranged at a position where the upper T-shaped split hub is matched with the upper hub screw.
Optionally, the graphite copper sleeve is arranged at a position where the lower T-shaped split hub is matched with the lower hub screw.
Optionally, the upper T-shaped split hub is bolted to form an integral upper T-shaped hub.
Optionally, the lower T-shaped split hub is bolted to form an integral lower T-shaped hub.
Optionally, the upper flap rubber is of a split structure.
Optionally, the lower flap rubber is of a split structure.
According to a second aspect of the invention there is also provided an unmanned helicopter comprising an unmanned helicopter hub according to the first aspect of the invention.
The inventor of the invention finds that in the prior art, an integral hub structure is generally adopted in the unmanned helicopter hub, the life of flapping rubber is short, and the system maintenance cost is high, while the technical scheme of adopting the unmanned helicopter hub reduces the maintenance cost of the hub system and improves the life of the flapping rubber. Therefore, the technical task to be achieved or the technical problems to be solved by the present invention are never thought or anticipated by those skilled in the art, and therefore the present invention is a new technical solution.
Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
FIG. 1 is a schematic structural view of a T-shaped split hub system provided by one embodiment of the present invention;
FIG. 2 is a schematic view of a T-shaped split hub flap rubber mount groove provided by one embodiment of the present invention.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
As shown in FIG. 1, the invention provides an unmanned helicopter hub, which comprises an inner main shaft 2, an outer main shaft 3, an upper T-shaped split hub 6, a lower T-shaped split hub 8, upper flapping rubber 5 and lower flapping rubber 7. The upper T-shaped split hub 6 and the upper flapping rubber 5 are arranged on the inner main shaft 2, and the lower T-shaped split hub 8 and the lower flapping rubber 7 are arranged on the outer main shaft 3.
The unmanned helicopter hub further comprises a hub screw, and the hub screw comprises an upper hub screw 1-1 and a lower hub screw 1-2.
The inner and outer main shafts are provided with boss mounting faces facing each other, the upper hub screw 1-1 connects the upper T-shaped split hub 6 to the boss mounting face of the inner main shaft 2, and the lower hub screw 1-2 connects the lower T-shaped split hub 8 to the boss mounting face of the outer main shaft 3.
The upper and lower T-shaped split hubs are respectively connected into an integral hub through bolts, the upper T-shaped split hub 6 integrally surrounds the upper hub screw rod 1-1 to make flapping motion, and the lower T-shaped split hub 8 integrally surrounds the lower hub screw rod 1-2 to make flapping motion.
Compared with the traditional integral hub, the T-shaped split hub is convenient to disassemble and assemble, so that the technical scheme of the invention has the advantages of convenient system maintenance and low maintenance cost.
Optionally, the upper T-shaped split hub 6 and the lower T-shaped split hub 8 are connected into a whole by a riveting connection manner, and technicians may also use other connection manners, and changes of these connection manners are all within the protection scope of the present invention.
Alternatively, as shown in fig. 1 and 2, the upper flap rubber 5 and the lower flap rubber 7 are of a split type structure, the upper T-shaped split hub 6 and the lower T-shaped hub 8 have flap rubber mounting grooves 9, the upper flap rubber 5 is disposed on the flap rubber mounting groove 9 of the upper T-shaped split hub 6, and the lower flap rubber 7 is disposed on the flap rubber mounting groove 9 of the lower T-shaped split hub 8.
Go up wave rubber 5 and wave rubber 7 down and be the armful of axle form, go up wave rubber 5 inboard with the laminating of 2 outer walls of interior main shaft, wave rubber 7 inboard down with the laminating of 3 outer walls of outer main shaft. Wave rubber from top to bottom and carry out spacingly through compression deformation to waving the motion for unmanned aerial vehicle's the motion of waving is controlled within reasonable scope.
Compare with traditional integral dance rubber, split type dance rubber installation with dismantle all more swiftly, and then, can regularly change according to the propeller hub vibration condition to waving rubber, conveniently maintain to improve propeller hub system stability and reliability.
Optionally, as shown in fig. 1, the coaxial unmanned helicopter hub may further include a graphite copper sleeve, the upper hub screw 1-1 is inserted into the through hole of the upper T-shaped split hub 6 and provided with an upper graphite copper sleeve 4-1, and the lower hub screw 1-2 is inserted into the through hole of the lower T-shaped split hub 8 and provided with an upper graphite copper sleeve 4-2. The graphite copper sleeve plays a role similar to a rotating bearing between the propeller hub screw rod and the T-shaped split propeller hub, and the service life of the propeller hub screw rod and the T-shaped split propeller hub is prolonged. When the propeller hub normally works, the graphite copper sleeve is replaced after the abrasion of the graphite copper sleeve reaches the preset degree, so that the matching reliability between the propeller hub screw rod and the T-shaped split propeller hub can be ensured, and the maintenance cost is reduced to a great extent.
In another embodiment of the invention, there is also provided an unmanned helicopter comprising the unmanned helicopter hub of any embodiment of the invention. This hub and the connection between other parts of unmanned aerial vehicle can adopt any kind of connection structure now, and it is no longer repeated here.
Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.
Claims (10)
1. An unmanned helicopter hub is characterized by comprising an inner main shaft, an outer main shaft, an upper T-shaped split hub, a lower T-shaped split hub, upper flapping rubber and lower flapping rubber, wherein,
the upper T-shaped split hub and the upper flapping rubber are arranged on the inner main shaft, and the lower T-shaped split hub and the lower flapping rubber are arranged on the outer main shaft;
the inner main shaft and the outer main shaft are respectively provided with two boss mounting surfaces which face each other, the upper T-shaped split hub is connected to the boss mounting surface of the inner main shaft through an upper hub screw rod, and the lower T-shaped split hub is connected to the boss mounting surface of the outer main shaft through a lower hub screw rod;
the upper T-shaped split hubs are connected to form an integral upper hub, the lower T-shaped split hubs are connected to form an integral lower hub, and the hubs are integrally swung around a hub screw.
2. The unmanned helicopter hub of claim 1, wherein said upper T-shaped split hub is bolted to form a unitary upper T-shaped hub.
3. The unmanned helicopter hub of claim 2, wherein said lower T-shaped split hub is bolted to form an integral lower T-shaped hub.
4. The unmanned helicopter hub of claim 1, wherein said upper T-shaped split hub is configured with a flap rubber mounting slot, said upper flap rubber is configured on said upper T-shaped split hub mounting slot, and an inner sidewall of said upper flap rubber is in abutment with said inner spindle.
5. The unmanned helicopter hub of claim 4, wherein said lower T-shaped split hub is configured with a flap rubber mounting slot, said lower flap rubber being configured on said lower T-shaped split hub mounting slot, an inner sidewall of said lower flap rubber being in abutment with said outer spindle.
6. The unmanned helicopter hub of claim 1, comprising a graphite copper sleeve disposed at a location where said upper T-shaped split hub mates with said upper hub screw.
7. The unmanned helicopter hub of claim 6, wherein said copper graphite sleeve is disposed at the location where said lower T-shaped split hub mates with said lower hub screw.
8. The unmanned helicopter hub of any of claims 1-7, wherein the flap rubber is a split structure.
9. The unmanned helicopter hub of claim 8, wherein said flap rubber is a split construction.
10. An unmanned helicopter comprising the unmanned helicopter hub of any of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911222167.1A CN111099015A (en) | 2019-12-03 | 2019-12-03 | Unmanned helicopter propeller hub and unmanned helicopter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911222167.1A CN111099015A (en) | 2019-12-03 | 2019-12-03 | Unmanned helicopter propeller hub and unmanned helicopter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111099015A true CN111099015A (en) | 2020-05-05 |
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ID=70420960
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911222167.1A Pending CN111099015A (en) | 2019-12-03 | 2019-12-03 | Unmanned helicopter propeller hub and unmanned helicopter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111099015A (en) |
-
2019
- 2019-12-03 CN CN201911222167.1A patent/CN111099015A/en active Pending
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