Machine door anti-sinking device

Abstract

The embodiment of the invention discloses a machine door anti-sinking device. The machine door anti-sinking device comprises a driving shaft, a composite rocker arm, a spring assembly, a touch rod with an idler wheel, an adjustable pull rod and a blocking assembly, the composite rocker arm comprises two rocker arms with hinged ends, wherein the driving shaft is installed on a cabin door skeleton,the hinged area at the end part of the composite rocker arm is nested on the outer side of the driving shaft, one rocker arm is connected with the cabin door skeleton through the spring assembly, theother rocker arm is connected with one end of the adjustable pull rod, and the other end of the adjustable pull rod is connected with the blocking assembly; and the driving shaft is used for rotatingunder the action of the touch rod with the idler wheel, the adjustable pull rod is driven by the rotation of the composite rocker arm to move, and thus the blocking assembly is locked or unlocked. Theembodiment of the invention provides a cabin door anti-sinking mechanism with simple structure, compact mechanism, convenient maintenance and less weight on the premise of meeting the use function requirements.

Description

technical field [0001] This application relates to but is not limited to the field of aviation technology, in particular to an anti-sinking device for an aircraft door. Background technique [0002] The aircraft door has a direct impact on the safety of the aircraft and is directly related to the entry and exit of personnel and cargo. On the one hand, the cabin door in the safety cabin directly affects the emergency evacuation time of passengers as an emergency exit, and the cabin door, as the largest opening of the fuselage, directly affects the structural integrity and safety. Many flight accidents in history were caused by the cabin door. On the other hand, the cabin door is a component directly manipulated by the crew and passengers, and the comfort, advancement and reliability of its manipulation directly affect the judgment of the advancement of the aircraft. [0003] The traditional hatch door is generally a side hinge. When it is opened, due to the effect of gravity...

AI Technical Summary

Problems solved by technology

[0003] The traditional hatch door is generally a side hinge. When it is opened, due to the effect of gravity for a long time, the hatch door sinks, resulting in a large gap on the upper side of the hatch door and a small gap on the lower part, causing the pressure cabin to release pressure. In severe cases, the hatch door cannot be closed due to sinking. on, making the plane unable to fly

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