Spring swing arm assembly and application method thereof

A rocker arm assembly and spring fixing technology, which is applied in the direction of aircraft accessories, wing leaf parts, door/window accessories, etc., can solve the problems of many operation steps, inconvenient maintenance work, and impact, so as to increase damping insurance, reduce operation steps, The effect of reducing the weight of the structure

Inactive Publication Date: 2013-03-27
XIAN AIRCRAFT IND GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current open rocker arm assembly only acts as a hinge, and the position of the strut also affects the normal progress of maintenance work, and there are many operating steps, which brings inconvenience to maintenance work

Method used

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  • Spring swing arm assembly and application method thereof
  • Spring swing arm assembly and application method thereof
  • Spring swing arm assembly and application method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] See the accompanying drawings, in implementation, see figure 2 , Support 1 and rocker arm 2 are machined from LY12-BCZYU plate; spring 3 is made of HB3-1-1×6×15II; first spring fixed point shaft 4 upper limit pin 5 and lower limit pin 6, the second 30CrMnSiA bar material is selected for use as the pin shaft 8 of the spring fixed point shaft 7 and the hinge point.

[0015] The support 1 is a T-shaped structure, and its bottom plane is used to connect with the aircraft body. The fixed body 10 protruding from the center of the support is used to fix the rocker arm 2 and the return spring 3. figure 1 The fixed body is a double-sided sandwich rigid body with a central groove, which is perpendicular to the bottom plane of the support; the rocker arm 2 is a rigid half-frame "ㄈ"-shaped connecting rod, and the front end of the rocker arm 2 passes through the pin shaft 8 Hinged on the fixed body 10 of the support, in order to limit the orbiting range of the rocker arm, the uppe...

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PUM

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Abstract

The invention relates to a spring swing arm assembly comprising a supporting seat, a swing arm, and a spring. The swing arm is hinged with the supporting seat through a pin. Two ends of the reset spring are respectively fixed on spring fixing points of the supporting seat and the swing arm, such that a variable triangle is formed. The spring swing arm assembly can be used for opening an aircraft flap. The supporting seat is fixed on a plane body, and the flap is fixedly connected to the other end of the swing arm. A reset spring maximum extension length state is adopted as a swing arm power assistance point. The swing arm drives the flap to orbit between a positive limit state and a negative limit state on two sides of the power assistance point around the hinge point, such that the opening and closing the flap are realized.

Description

technical field [0001] The invention relates to the fields of aircraft structural design, (doors, hatches, etc.) opening methods, and safety measures when (doors, hatches, etc.) are closed. Background technique [0002] The frequency of use and maintenance of aircraft system equipment, especially the engine, is relatively high. In the design of the fuselage and engine nacelle, because it is convenient to maintain and replace the system equipment, engine and its accessories, a large number of maintenance and installation covers are designed. . These covers can be designed to be quick-release according to the inspection and maintenance frequency of the system equipment and corresponding parts of the engine. [0003] At present, in the maintenance process of the system equipment, the engine and its accessories, the door cover lock must be opened first, and then the door cover should be opened to the angle to be opened, and then the door cover will be supported by a strut to ke...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64C1/14E05F1/12E05F5/08
Inventor 付友波段晓鸽
Owner XIAN AIRCRAFT IND GROUP
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