CN219056584U - Multi-degree-of-freedom helicopter stay bar - Google Patents
Multi-degree-of-freedom helicopter stay bar Download PDFInfo
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- CN219056584U CN219056584U CN202223090238.7U CN202223090238U CN219056584U CN 219056584 U CN219056584 U CN 219056584U CN 202223090238 U CN202223090238 U CN 202223090238U CN 219056584 U CN219056584 U CN 219056584U
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- stay
- stay bar
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T50/00—Aeronautics or air transport
- Y02T50/40—Weight reduction
Abstract
The application provides a multi freedom helicopter vaulting pole, include: the fixed stay bar is provided with threads at two ends; the left-hand joint is connected with one end of the fixed stay bar through threads; the right-hand joint is connected with the other end of the fixed stay bar through threads; when the fixed stay bar is rotated, the left-handed connector and the right-handed connector can extend or shorten along the length direction of the fixed stay bar; the application provides a simple reasonable stay bar mechanism that can realize length, angle and position adjustment possess the assembly interchangeability simultaneously, conveniently maintain and change.
Description
Technical Field
The application belongs to the technical field of helicopter structures, and particularly relates to a multi-degree-of-freedom helicopter stay bar.
Background
Cantilever structures such as helicopter external equipment, horizontal tail installation, short wings and the like are fixed by stay bars, and the fixed stay bars are required to have length and angle adjusting functions according to assembly requirements.
According to helicopter industry experience, the existing fixed stay bar adopts a mode of single lugs or double lugs at two ends and a middle polished rod, riveting or welding connection is adopted when assembling and matching the joints at the rear two ends and the middle polished rod, and the fixed stay bar does not have a length adjusting function and interchangeability.
Therefore, the multi-degree-of-freedom stay bar mechanism can realize length, angle adjustment and assembly interchange.
Disclosure of Invention
To above-mentioned technical problem, this application provides a multi freedom helicopter vaulting pole, includes:
the fixed stay bar is provided with threads at two ends;
the left-hand joint is connected with one end of the fixed stay bar through threads;
the right-hand joint is connected with the other end of the fixed stay bar through threads; when the fixed stay bar is rotated, the left-handed connector and the right-handed connector can extend or shorten along the length direction of the fixed stay bar.
Preferably, the fixing stay includes:
a middle polish rod;
end screw members disposed at both ends of the intermediate polish rod; wherein the end screw comprises a thread and a stop plane.
Preferably, the right rotary joint includes:
a threaded rod having external threads;
the single-lug connector is connected with one end of the threaded rod; wherein the other end of the threaded rod is connected with the end threaded piece through threads; the single ear connector includes a connection hole.
Preferably, the right rotary joint further comprises:
the fastening nut is arranged on the threaded rod;
the fixed gasket is arranged on the threaded rod; wherein, the fastening nut is used for locking the threaded rod.
Preferably, the fastening nut is provided with a safety hole, and the fixing gasket is provided with a safety hole; the right rotary joint further includes:
and the fuse can pass through the safety holes on the fastening nut and the fixing gasket to prevent the fastening nut from locking failure.
Preferably, the right rotary joint further comprises:
the joint bearing is arranged in the connecting hole and is used for adjusting the installation angle.
Preferably, the rotation direction of the left-hand joint is opposite to the rotation direction of the right-hand joint.
The beneficial technical effect of this application:
the application provides a simple reasonable stay bar mechanism that can realize length, angle and position adjustment possess the assembly interchangeability simultaneously, conveniently maintain and change.
Drawings
Fig. 1 is a schematic installation diagram of a multi-degree-of-freedom helicopter stay provided in an embodiment of the application;
fig. 2 is a schematic structural view of a multi-degree-of-freedom helicopter stay provided in an embodiment of the application;
fig. 3 is a schematic diagram of connection between a rotary joint and a fixed stay rod according to an embodiment of the present application;
FIG. 4 is a cross-sectional view at A-A provided by an embodiment of the present application;
FIG. 5 is an exploded view of a rotary joint provided in an embodiment of the present application;
wherein, 1-fixing stay bar; 101-an intermediate polish rod; 102-end screw; 1021-stop plane; 2-left-hand joint; 3-right-handed joints; 301-monaural joint; 302-knuckle bearing; 303-a threaded rod; 304-tightening a nut; 305-fixing a gasket; 4-a body structure; 5-stores.
The specific embodiment is as follows:
referring to fig. 1-5, the present application provides a stay bar with simple and reasonable structure, which can realize length and angle adjustment, and meet the requirements of length adjustment, angle adjustment and interchangeability.
In the present embodiment, a helicopter pylon 5 is connected to a fuselage structure 4 by struts 1, as shown in fig. 1.
In one possible implementation, the multi-degree-of-freedom adjustable length helicopter stay 1 includes an intermediate polish rod assembly 101, a right-handed connector 3, and a left-handed connector 2. The right-hand joint 3 and the left-hand joint 2 are connected with the machine body structure 4, the installation angle of the stay bar 1 is adjusted through the joint bearings 302 on the left-hand joint 2 and the right-hand joint 3, and the length of the stay bar 1 is adjusted through rotating the middle polished rod 101.
As shown in fig. 2 and 5, the fixed stay bar 1 is composed of an intermediate polish rod 101 and an end screw member 102, and is respectively connected with a right-handed joint 3 and a left-handed joint 2 through threads, the intermediate polish rod 101 is connected with the end screw member 102 through welding or riveting, and different materials are adopted to realize weight reduction of the structure. The right-hand joint 3 and the left-hand joint 2 have the same structural form, and the difference is that the screw threads are opposite in rotation direction, and only the right-hand joint is shown in fig. 3, 4 and 5.
Further, as shown in fig. 5, the right-hand joint 3 includes a threaded rod 303, a fixing washer 305, a fastening nut 304, a single-ear joint 301, and a knuckle bearing 302. The threaded rod 303 is connected to the end screw 102 and length adjustment is achieved by rotating the intermediate polish rod 101. The single-lug connector 301 and the threaded rod 303 are connected through the rotating structure shown in fig. 3 and 4, and the joint bearing 302 is arranged in the inner hole of the single-lug connector 301, so that the angle and the direction of the stay bar 1 during installation are adjusted.
Wherein, fixed gasket 305 blocks tip screw 102 through the draw-in groove, and fastening nut 304 installs on threaded rod 303, and after single ear joint 301 assembly adjustment was put in place, rotatory fastening nut 304 top fastening fixed gasket 305 adopts the fuse to connect the safety vent on fastening nut 304 and the fixed gasket 305 to the length of fixed stay bar 1.
According to the helicopter external store adjusting device, the right-handed connector and the left-handed connector are arranged at the two ends of the stay bar, the length, the azimuth and the angle of the stay bar are adjusted according to assembly requirements, the defect that the length and the angle of the existing stay bar are not adjustable after assembly is finished is overcome, and meanwhile assembly interchangeability is achieved, and maintenance and replacement of the helicopter external store are facilitated.
The application provides a simple reasonable stay bar that can realize length, angle and position adjustment, possesses the assembly interchangeability simultaneously, conveniently maintains and change.
It should be noted that in the development of certain military helicopters, the length and angle adjustable struts of the helicopter have been successfully used.
Claims (7)
1. A multi-degree of freedom helicopter stay comprising:
the fixed stay bar is provided with threads at two ends;
the left-hand joint is connected with one end of the fixed stay bar through threads;
the right-hand joint is connected with the other end of the fixed stay bar through threads; when the fixed stay bar is rotated, the left-handed connector and the right-handed connector can extend or shorten along the length direction of the fixed stay bar.
2. The multiple degree of freedom helicopter stay of claim 1 wherein the fixed stay comprises:
a middle polish rod;
end screw members disposed at both ends of the intermediate polish rod; wherein the end screw comprises a thread and a stop plane.
3. The multiple degree of freedom helicopter stay of claim 2 wherein said right hand joint comprises:
a threaded rod having external threads;
the single-lug connector is connected with one end of the threaded rod; wherein the other end of the threaded rod is connected with the end threaded piece through threads; the single ear connector includes a connection hole.
4. A multi-degree of freedom helicopter stay as claimed in claim 3 wherein said right hand connector further comprises:
the fastening nut is arranged on the threaded rod;
the fixed gasket is arranged on the threaded rod; wherein, the fastening nut is used for locking the threaded rod.
5. The multi-degree of freedom helicopter stay of claim 4 wherein said fastening nut has a safety hole and said fixed spacer has a safety hole; the right-handed joint further includes:
and the fuse can pass through the safety holes on the fastening nut and the fixing gasket to prevent the fastening nut from locking failure.
6. A multi-degree of freedom helicopter stay as claimed in claim 3 wherein said right hand connector further comprises:
the joint bearing is arranged in the connecting hole and is used for adjusting the installation angle.
7. A multi-degree of freedom helicopter stay according to claim 1 wherein the direction of rotation of said left hand connector is opposite to the direction of rotation of said right hand connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223090238.7U CN219056584U (en) | 2022-11-17 | 2022-11-17 | Multi-degree-of-freedom helicopter stay bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223090238.7U CN219056584U (en) | 2022-11-17 | 2022-11-17 | Multi-degree-of-freedom helicopter stay bar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219056584U true CN219056584U (en) | 2023-05-23 |
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ID=86342484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223090238.7U Active CN219056584U (en) | 2022-11-17 | 2022-11-17 | Multi-degree-of-freedom helicopter stay bar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219056584U (en) |
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2022
- 2022-11-17 CN CN202223090238.7U patent/CN219056584U/en active Active
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