A method for preparing an integrated structure of an aircraft landing gear outer cylinder and a diagonal brace
A technology of aircraft landing gear and diagonal braces, which is applied in transportation and packaging, metal processing equipment, chassis, etc., can solve the problems of many matching parts, complex processing, and processing removal, etc., to reduce the number of parts, avoid stress concentration, The effect of reducing material waste
Active Publication Date: 2021-05-25
SHENYANG AIRCRAFT DESIGN INST AVIATION IND CORP OF CHINA
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Problems solved by technology
[0002] The landing gear is the key stress-bearing part of the aircraft, and it plays an irreplaceable role in the process of take-off and landing, which greatly affects the use and safety of the aircraft
Traditional landing gear outer cylinders and diagonal struts are made of forging + machining. At present, aircraft front landing gear outer cylinders and diagonal struts on both sides are combined structures, which are connected and installed by bolts, nuts and cotter pins. Complicated, not conducive to weight loss
At the same time, the outer cylinder of the landing gear is a cylindrical structure, while the traditional forging is a solid structure of the same material, and the inner cavity of the cylinder needs to be processed and removed, resulting in material waste
Method used
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[0029] In order to make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below in conjunction with the drawings in the embodiments of the present invention. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of the invention. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention. Embodiments of the present invention will be described in detail below ...
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Abstract
The invention relates to aviation manufacturing technology, in particular to a preparation method for an integrated structure of an outer cylinder of an aircraft landing gear and a diagonal brace, which is used to realize the preparation of an integrated structure of an outer cylinder of an aircraft landing gear and a diagonal brace. The outer casing of the overall structure of the aircraft landing gear outer cylinder and the diagonal brace, and fix the mandrel at a predetermined position in the outer sheath; in an argon-protected environment, fill the space between the outer sheath and the mandrel with A- 100 ultra-high-strength steel powder; and carry out hot isostatic pressing, then carry out cooling treatment, remove the mandrel and the outer sheath, and make the integrated structure of the outer cylinder of the aircraft landing gear and the diagonal brace; this method can avoid the stress in the connection area Concentrate and reduce material waste.
Description
technical field [0001] The invention relates to the technical field of aviation manufacturing, in particular to a method for preparing an integrated structure of an outer cylinder of an aircraft landing gear and a diagonal brace. Background technique [0002] The landing gear is the key stress-bearing part of the aircraft, and it plays an irreplaceable role in the process of take-off and landing, which greatly affects the use and safety of the aircraft. Traditional landing gear outer cylinders and diagonal struts are made of forging + machining. At present, aircraft front landing gear outer cylinders and diagonal struts on both sides are combined structures, which are connected and installed by bolts, nuts and cotter pins. Complicated, not conducive to weight loss. At the same time, the outer cylinder of the landing gear is in the form of a cylindrical structure, while the traditional forging is a solid structure of the same material, and the inner cavity of the cylinder ne...
Claims
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IPC IPC(8): B22F3/15B22F5/10
CPCB22F3/1208B22F3/15B22F5/10B22F2003/153B22F2999/00B22F1/05C22C33/02B64C25/10B22F5/106B22F3/1283B22F3/1291
Inventor 崔灿王向明吴斌李志鹏
Owner SHENYANG AIRCRAFT DESIGN INST AVIATION IND CORP OF CHINA