Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A landing gear door linkage retracting device

A technology for landing gear hatches and retractable devices, which is applied in the direction of weight reduction and chassis, and can solve problems affecting system reliability, complex control logic, and large interior space, so as to reduce occupied space, simplify control logic, The effect of improving reliability

Active Publication Date: 2016-03-30
JIANGXI HONGDU AVIATION IND GRP
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The landing gear door retractable device includes two sets of actuating mechanisms: the actuating mechanism of the landing gear and the actuating mechanism of the wheel guard. There are many mechanisms, resulting in a large space and heavy weight in the machine

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 more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A landing gear door linkage retracting device
  • A landing gear door linkage retracting device
  • A landing gear door linkage retracting device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] The present invention is described in detail below in conjunction with accompanying drawing:

[0022] A landing gear door linkage retractable device, which includes landing gear 1, rotating shaft I2, rotating shaft II8, rotating shaft III11, rotating shaft IV15, upper strut 3, rocker arm I4, rocker arm II7, rocker arm III16, and lower strut 5 , Retractable actuator 6, connecting rod I9, connecting rod II14, connecting rod III17, goose-shaped rocker arm 10, pillar guard 12 and wheel guard 13;

[0023] The landing gear 1 is composed of a wheel and a pillar, fixed on the body through the rotating shaft II8, and rotates around the rotating shaft. A rocker arm II7 is designed on the landing gear pillar, which is connected with one end of the retractable actuator 6;

[0024] The upper strut 3 is connected with the machine body through the rotating shaft I2, and rotates around the rotating shaft. A rocker arm I4 is designed on the upper strut 3. One end of the rocker arm I4 is...

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

No PUM Login to View More

Abstract

The invention relates to a linked landing gear cabin door folding and unfolding device and belongs to the technical field of aircraft manufacturing. The linked landing gear cabin door folding and unfolding device comprises a landing gear, a rotation shaft I, a rotation shaft II, a rotation shaft III, a rotation shaft IV, an upper supporting rod, a rocker arm I, a rocker arm II, a rocker arm III, a lower supporting rod, a folding and unfolding actuation cylinder, a connection rod I, a connection rod II, a connection rod III, a goose-shaped rocker arm, a support column protection plate and an airplane wheel protection plate. By virtue of the linked landing gear cabin door folding and unfolding device, the cabin door folding and unfolding actuation system is simplified, so that the occupying space of the device in an airplane is reduced and the structure weight is reduced; by virtue of the design of a linked mechanism, the order of folding and unfolding the landing gear, the airplane wheel protection plate and the support column protection plate is ensured, the control logic is simplified and the reliability is improved; the airplane protection plate is closed when the landing gear is unfolded, the pneumatic resistance can be reduced; the takeoff and landing performances of the airplane are improved; the damage to the airplane, caused by entrance of foreign materials in a landing gear cabin, can be avoided.

Description

technical field [0001] The invention relates to a landing gear cabin door linkage retractable device, which belongs to the technical field of aircraft manufacturing. Background technique [0002] In modern aircraft design, in order to ensure that the aircraft has good aerodynamic performance and avoid the aerodynamic resistance caused by the landing gear, it is generally necessary to design a set of motion mechanisms to realize the retraction and retraction of the landing gear. The traditional nose landing gear retractable device includes: a door retractable actuator, a landing gear retractable actuator, and a connecting rod. The wheel guard is retractable through the door retractable actuator; the pillar guard and the landing gear are retractable through the linkage of the landing gear; the landing gear is retractable through the landing gear retractable actuator. The landing gear door retractable device includes two sets of actuating mechanisms: the actuating mechanism of...

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
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B64C25/18B64C25/14
CPCY02T50/40
Inventor 何明清刘敏冷智辉沈亮辛荣提
Owner JIANGXI HONGDU AVIATION IND GRP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com