Tail cone adjustable connecting method with assembly compensation function
A connection method and an adjustable technology, applied in aircraft assembly, transportation and packaging, aircraft parts, etc., can solve problems such as difficulty in ensuring normal installation of joints, reduction of manufacturing precision, high requirements for joint processing and assembly precision, and reduce assembly inconsistency Probability, improved fit accuracy, and efficient load transfer
Pending Publication Date: 2022-02-08
AVIC SAC COMML AIRCRAFT
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Problems solved by technology
[0003] There is an over-positioning problem when the five sets of joints are docked. Due to manufacturing and assembly errors, it is difficult to ensure that all joints are installed normally
The traditional solution is to use standard samples for coordination. The processing and assembly accuracy of each joint is high, and it is often necessary to reduce the manufacturing accuracy at the expense of the carrying capacity to a certain extent.
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[0027] Below in conjunction with accompanying drawing and technical method, further illustrate the present invention.
[0028] A tail cone adjustable connection method with assembly compensation, applied to the rear fuselage of an aircraft, wherein the rear fuselage of the aircraft includes a tail cone 1 and a front section of the rear fuselage 2, which pass through a set of calibration joints 3 and three sets of main butt joints 4 is connected with one set of spare butt joints 5. The connection at the traditional three main butt joints 4 can limit the 6 degrees of freedom of the tail cone 1. In order to ensure assembly coordination, the calibration joint 3 and the spare butt joint 5 in the present invention The connection method needs to have assembly compensation function.
[0029] Such as figure 1 , figure 2 As shown, a rear fuselage of an aircraft includes a tail cone 1 and a front section of the rear fuselage 2, and the two are connected by a set of calibration joints ...
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The invention belongs to the field of aircraft design, and provides a tail cone adjustable connecting method with an assembly compensation function. According to the scheme, a tail cone and a front section of a rear fuselage are connected in a five-point statically indeterminate structure mode, and assembly compensation is achieved at a calibration connector through two eccentric bushings which are sleeved with each other internally and externally; and assembly compensation is realized at the standby butt joint through two eccentric bushings which synchronously rotate with the bolt. The method is simple and compact in structure and mature in process, the problem that a multi-point connecting scheme has ultrahigh assembling and machining precision requirements on the connecting piece can be solved, the assembling incoordination probability is reduced, the matching precision between the connecting pieces is improved, and load transmission between structures is more efficient.
Description
technical field [0001] The invention belongs to the field of aircraft design, and relates to an adjustable connection method of a tail cone with an assembly compensation function. Background technique [0002] In aircraft design, the tail cone and the front section of the rear fuselage are usually manufactured separately and then docked and assembled. In order to improve assembly efficiency, three sets of main butt joints, one set of spare butt joints and one set of calibration joints are often used for butt joints. Each set of joints consists of two parts, which are respectively installed on the front section of the rear fuselage and the tail cone. The three sets of main butt joints can completely restrict the 6 degrees of freedom of the tail cone, and the spare butt joints and calibration joints are redundant connection points designed to meet the damage safety requirements. [0003] There is an over-positioning problem when the five sets of joints are docked. Due to man...
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Login to View More IPC IPC(8): B64F5/10B64C1/00
CPCB64F5/10B64C1/00
Inventor牛福春孟玲俊刘旭周莫普马爽毛磊凯
OwnerAVIC SAC COMML AIRCRAFT