CN201923318U - Hingeless rotor hub support arm for helicopter - Google Patents
Hingeless rotor hub support arm for helicopter Download PDFInfo
- Publication number
- CN201923318U CN201923318U CN2010205651561U CN201020565156U CN201923318U CN 201923318 U CN201923318 U CN 201923318U CN 2010205651561 U CN2010205651561 U CN 2010205651561U CN 201020565156 U CN201020565156 U CN 201020565156U CN 201923318 U CN201923318 U CN 201923318U
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- Prior art keywords
- leaf spring
- shimmy
- plate spring
- waving
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- 238000002474 experimental method Methods 0.000 abstract description 4
- 230000008878 coupling Effects 0.000 abstract description 2
- 238000010168 coupling process Methods 0.000 abstract description 2
- 238000005859 coupling reaction Methods 0.000 abstract description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000003447 ipsilateral effect Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000013016 damping Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
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Abstract
A hingeless rotor hub support frame for a helicopter relates to a novel helicopter blade connecting device and comprises a U-shaped shimmy plate spring (2), a waving plate spring (3) and two plate spring connecting parts (4). The waving plate spring (3) is perpendicular to the U-shaped shimmy plate spring (2) and extends into a U-shaped opening of the U-shaped shimmy plate spring (2), the two plate spring connecting parts (4) are respectively located among the waving plate spring (3) and two extending ends of the U-shaped shimmy plate spring (2), one end of each plate spring connecting part (4) is connected with the corresponding extending end of the U-shaped shimmy plate spring (2), and the other end of each plate spring connecting part (4) is connected with an extending end of the waving plate spring (3) extending into the U-shaped opening, so that the U-shaped shimmy plate spring (2) is fixedly connected with the waving plate spring (3) in a crossed manner. The hingeless rotor hub support frame has the advantages of simple and compact structure, light weight, high reliability, simple physical analysis models, low waving and shimmy coupling and the like, and completely meets requirements of ground experiments for rotors.
Description
Affiliated technical field
The utility model relates to a kind of novel helicopter blade connecting device, is particularly useful for lifting airscrew ground experiment equipment.
Background technology
The radial type propeller hub have flapping hinge, lead lag hinge and pitch hinge, reverse to the blade flapping that causes by aerodynamic force, shimmy and displacement so that degree of freedom to be provided, as illustrate shown in Figure 1.Its complex structure, maintenance workload be big, handle shortcomings such as effect and cireular frequency damping be little, and people develop hingeless rotor since the fifties in last century, and at the end of the sixties, the hingeless rotor propeller hub enters the practical stage.No hinge formula propeller hub cancelled flapping hinge and lead lag hinge, only keep pitch hinge, structure is simplified, and has reduced maintenance requirement and propeller hub resistance.In order to bear hub moment, require blade root and propeller hub to have enough strength and stiffness.At present helicopter hingeless rotor propeller hub is waved with lagging motion and is realized that by elastic beam flexural deformation this elastic beam is composite material beam normally, and reasonably layer design in shop makes it have intensity and the rigidity that meets demand waving with shimmy direction.But in small size, when using on the few lifting airscrew ground test equipment of quantity, composite material does not have hinge formula propeller hub processing difficulties, and cost performance is not high.
The utility model content
In order to be convenient to that no hinge formula propeller hub support arm is applied in the ground test equipment, the utility model provides a kind of nothing simple in structure hinge formula lifting airscrew propeller hub support arm.
A kind of nothing hinge formula helicopter hub support arm is characterized in that: comprise the shimmy leaf spring of U type, wave leaf spring, two leaf spring attaching partss; It is vertical with the shimmy leaf spring of U type wherein to wave leaf spring, and stretches in the U type mouth of the shimmy leaf spring of U type; Above-mentioned two leaf spring attaching partss lay respectively between two external parts waving leaf spring and the shimmy leaf spring of U type; One end of leaf spring attaching parts is connected with the external part of the shimmy leaf spring of U type, and the other end is connected with the inserting end of waving leaf spring that stretches in the U type mouth, makes the shimmy leaf spring of U type and waves leaf spring and intersect and be connected.
The utility model will be responsible for two leaf spring square crossings of flapping action and lagging motion respectively and install, and wherein shimmy leaf spring is the U type.When blade lagging moved, the flexural deformation of U template spring provide shimmy degree of freedom, and the leaf spring of waving of quadrature provided rigidity with it; When blade flapping motion, wave leaf spring flexural deformation, provide and wave degree of freedom, and U template spring provides rigidity.
Wave, shimmy leaf spring center and the universal hinge of distance-variable rocker arm center three point on a straight line.So, the flat spring parts not flexibility and the stiffness characteristics of ipsilateral are fully utilized, and have shortened the propeller hub arm length, simplify the structure, and have improved reliability.Make full use of the sheet metal not rigidity and the compliance characteristics of ipsilateral, advantage such as have.Experimental results show that, this new configuration propeller hub support arm is when carrying out the hingeless rotor ground experiment, can in the same zone of the arm of propeller hub, realize waving and lagging motion of blade, and have compact conformation, in light weight, reliability is high, the physical analysis model is simple, wave advantages such as shimmy coupling is low, competent fully rotor ground experiment requirement.
Description of drawings
Fig. 1 radial type propeller hub scheme drawing;
Fig. 2 is a front view of the present utility model;
Fig. 3 is a birds-eye view of the present utility model;
In above-mentioned two width of cloth figure, 1. lifting airscrew propeller hub housing, the shimmy leaf spring of 2.U type is 3. waved leaf spring, 4. leaf spring attaching parts, 5. axial hinge, 6. blade, 7. distance-variable rocker arm, 11. flapping hinges, 12. pitch hinges, 13. lead lag hinge, a. waves, the b. displacement, c. is shimmy.
The specific embodiment
With shimmy leaf spring 2 with wave leaf spring 3 and fix up by leaf spring attaching parts 4, and then is connected with conventional axial hinge 5, constitute complete nothing and cut with scissors formula propeller hub support arm.Propeller hub support arm one end and the rotor hub housing 1 that connect is affixed, and the affixed blade 6 of the other end is connected to distance-variable rocker arm 7 to the blade pitch-change-link simultaneously.The work that utilizes this no hinge formula propeller hub support arm to connect blade and propeller hub housing has promptly been finished in so operation.
Claims (2)
1. no hinge formula lifting airscrew propeller hub support arm is characterized in that:
Comprise the shimmy leaf spring of U type (2), wave leaf spring (3), two leaf spring attaching partss (4);
It is vertical with the shimmy leaf spring of U type (2) wherein to wave leaf spring (3), and stretches in the U type mouth of the shimmy leaf spring of U type (2);
Above-mentioned two leaf spring attaching partss (4) lay respectively between two external parts waving leaf spring (3) and the shimmy leaf spring of U type (2); One end of leaf spring attaching parts (4) is connected with the external part of the shimmy leaf spring of U type (2), and the other end is connected with the inserting end of waving leaf spring (3) that stretches in the U type mouth, makes the shimmy leaf spring of U type (2) and waves leaf spring (3) and intersect and be connected.
2. nothing according to claim 2 hinge formula lifting airscrew propeller hub support arm is characterized in that: the center of the shimmy leaf spring of above-mentioned U type (2) and wave the center of leaf spring (3), and with the universal hinge center three point on a straight line of distance-variable rocker arm (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205651561U CN201923318U (en) | 2010-10-18 | 2010-10-18 | Hingeless rotor hub support arm for helicopter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205651561U CN201923318U (en) | 2010-10-18 | 2010-10-18 | Hingeless rotor hub support arm for helicopter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201923318U true CN201923318U (en) | 2011-08-10 |
Family
ID=44427184
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205651561U Expired - Fee Related CN201923318U (en) | 2010-10-18 | 2010-10-18 | Hingeless rotor hub support arm for helicopter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201923318U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105292465A (en) * | 2015-11-04 | 2016-02-03 | 中航维拓（北京）科技有限责任公司 | Rigid rotor system for helicopter |
| CN112389636A (en) * | 2020-11-10 | 2021-02-23 | 成都云尘科技有限责任公司 | Built-in integral type propeller hub and control method |
-
2010
- 2010-10-18 CN CN2010205651561U patent/CN201923318U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105292465A (en) * | 2015-11-04 | 2016-02-03 | 中航维拓（北京）科技有限责任公司 | Rigid rotor system for helicopter |
| CN112389636A (en) * | 2020-11-10 | 2021-02-23 | 成都云尘科技有限责任公司 | Built-in integral type propeller hub and control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110810 Termination date: 20121018 |