Multi-mode Motion Opening Mechanism Design for Aircraft Door Based on the Bricard Mechanism

Peng Renhui; Hang Lubin; Wu Borui; Wu Yang; Qiu Xudong

doi:10.16578/j.issn.1004.2539.2023.04.008

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Multi-mode Motion Opening Mechanism Design for Aircraft Door Based on the Bricard Mechanism

Design· Calculation | 更新时间：2023-05-04

- Multi-mode Motion Opening Mechanism Design for Aircraft Door Based on the Bricard Mechanism
- Journal of Mechanical Transmission Vol. 47, Issue 4, Pages: 50-57(2023)
- 作者机构：
  
  1.上海工程技术大学机械与汽车工程学院，上海 201600
  2.上海市大型构件智能制造机器人技术协同创新中心，上海 201620
  3.上海飞机设计研究院，上海 201210
- 作者简介：
- 基金信息：
- DOI：10.16578/j.issn.1004.2539.2023.04.008
  CLC：
- Published：15 April 2023，
  
  Received：06 March 2022，
  
  Revised：07 May 2022，
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朋仁辉,杭鲁滨,吴柏锐等.基于Bricard机构的客机舱门多模式运动开启机构设计[J].机械传动,2023,47(04):50-57.

Peng Renhui,Hang Lubin,Wu Borui,et al.Multi-mode Motion Opening Mechanism Design for Aircraft Door Based on the Bricard Mechanism[J].Journal of Mechanical Transmission,2023,47(04):50-57.
朋仁辉,杭鲁滨,吴柏锐等.基于Bricard机构的客机舱门多模式运动开启机构设计[J].机械传动,2023,47(04):50-57. DOI： 10.16578/j.issn.1004.2539.2023.04.008.

Peng Renhui,Hang Lubin,Wu Borui,et al.Multi-mode Motion Opening Mechanism Design for Aircraft Door Based on the Bricard Mechanism[J].Journal of Mechanical Transmission,2023,47(04):50-57. DOI： 10.16578/j.issn.1004.2539.2023.04.008.

摘要

舱门相对机身全方向位姿调整是舱门与机身外表面平滑连接、机身内外可靠密封的前提。针对现有提升臂4R机构串接铰链臂机构的开启支链不能实现舱门位姿全方向调整，提出以面对称Bricard机构代替4R机构的新型飞机舱门开启支链，与平行杆机构2-S-S支链构成3支链舱门开启并联机构。分析了Bricard机构6R、4R运动模式及模式切换条件；基于并联机构方位特征集理论，进行舱门开启机构不同模式下方位特征集分析，验证了串接铰链臂面对称Bricard机构6R模式、4R模式及模式切换可实现飞机舱门提升及全方向位姿调整；机构方位特征集揭示舱门机构提升、调整和旋转运动过程具有1个自由度及选取不同独立元素的3种运动模式：6R提升运动，球面4R调整运动，铰链臂旋转开启运动。嵌入面对称Bricard机构开启机构使得舱门能够全方向进行姿态调整，为飞机舱门开启机构的设计提供了新的思路。

Abstract

The aircraft door must be smoothly linked with the outer surface of the fuselage and realize the sealing function of the inner and outer boundaries of the fuselage at the same time. The normal opening and closing can be realized only when the position and posture of the door relative to the fuselage are corrected. In view of the fact that the opening branch chain of the existing lifting arm 4R mechanism linked in series with the large hinge arm mechanism cannot adjust the position and attitude of the aircraft door in all directions

a new aircraft door opening branch chain is proposed

which uses the plane-symmetric Bricard mechanism instead of the 4R mechanism

and forms a three branch chain aircraft door opening parallel mechanism with the parallel rod mechanism 2-S-S branch chain. Based on the orientation feature set theory of parallel mechanism

the azimuth feature set analysis of door opening mechanism under different modes is carried out. It is verified that the 6R mode

4R mode and mode switching of serial large hinge arm surface symmetrical Bricard mechanism can realize the lifting of aircraft door and the adjustment of omnidirectional position and attitude. The orientation feature set of the mechanism reveals that the lifting

adjustment and rotation motion of the opening mechanism has a degree of freedom

and three motion modes with different independent elements are selected：6R lifting

spherical 4R adjustment movement and large hinge arm rotation during door opening. When the Bricard mechanism is embedded

the aircraft door can be coupled and adjusted in three directions

which provides a new idea for the design of aircraft door.

关键词

舱门开启机构面对称Bricard机构多模式方位特征集

Keywords

Aircraft door opening mechanismPlane-symmetric Bricard linkageMultimode motionPosition and orientation characteristics

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