Fatigue test loading device for main landing gear of helicopter
A fatigue test and loading device technology, which is applied in the testing of mechanical parts, the testing of machine/structural parts, and measuring devices, etc., can solve the problems of inconvenient disassembly and assembly, complex fatigue test structure, etc.
Active Publication Date: 2022-03-11
CHINA HELICOPTER RES & DEV INST
View PDF9 Cites 2 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004]
The objective of the invention is: the present invention provides a kind of fatigue test loading device of helicopter main landing gear, to solve the fatigue test structure complexity of existing helicopter main landing gear, inconvenient dismounting, and test in the process of applying load, The problem of additional force
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0043] In order to make the purpose, technical solution and advantages of the present invention more clear, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined arbitrarily with each other.
[0044] It has been explained in the above-mentioned background technology that the main landing gear is a helicopter landing device, which plays a role in absorbing energy during the landing process of the helicopter, and the main landing gear of the helicopter needs to bear alternating loads during take-off and landing, and its fatigue The performance directly affects the flight safety of the helicopter. The existing fatigue test structure of the main landing gear of the helicopter is complex, inconvenient to disassemble and assemble, and additional force will be generated du...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention provides a fatigue test loading device for a main landing gear of a helicopter, knuckle bearings at two ends of a tubular shaft of a main landing gear assembly are mounted in knuckle bearing supports and are fixed on a test bed through the knuckle bearing supports, an upper joint connecting piece connected with the end part of a buffer strut is fixedly mounted on the test bed, and a lower joint connecting piece connected with the end part of the buffer strut is fixedly mounted on the test bed. The hub shaft is connected with the anti-twist pin, the anti-rotation fixing seat and the false wheel assembly in sequence; the false wheel assembly is used for simulating an airplane wheel connected with a main landing gear, single-fork-lug structural parts are installed between two discs of the false wheel assembly in the Z direction and the X direction and used for applying Z-direction loads and X-direction loads, and double-fork lugs used for applying Y-direction loads are installed in the Y direction. According to the technical scheme, the problems that an existing helicopter main undercarriage fatigue test structure is complex and inconvenient to disassemble and assemble, and additional acting force can be generated in the load applying process in the test are solved.
Description
technical field [0001] The invention relates to but not limited to the technical field of helicopter fatigue tests, in particular to a fatigue test loading device for helicopter main landing gear. Background technique [0002] The main landing gear is an important part of the helicopter structure. Specifically, the main landing gear is the landing device of the helicopter, which plays a role in absorbing energy during the landing process of the helicopter, and can reduce the impact on the helicopter during the landing process. [0003] The main landing gear of a helicopter needs to bear alternating loads during take-off and landing, and its fatigue performance directly affects the flight safety of the helicopter. The fatigue test structure of the existing main landing gear of a helicopter is complicated, and it is inconvenient to disassemble and assemble. , an additional force will be generated. Contents of the invention [0004] The objective of the invention is: the pre...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): G01M13/00G01N3/32B64F5/60
CPCG01M13/00G01N3/32B64F5/60G01N2203/0005G01N2203/0021G01N2203/0073
Inventor 宋云林典洵张丽琴孙云伟
Owner CHINA HELICOPTER RES & DEV INST