A Lifting and Locking Mechanism for Civil Aircraft Cabin Door Locking Latch Shaft

Abstract

The invention relates to a lifting locking mechanism for a civil aircraft cabin door locking latch shaft. A rocker arm is coaxially and fixedly connected to the periphery of the latch shaft of a cabin door. A stop block is arranged on the periphery of one end of the rocker arm, a guide wheel is connected to the other end of the rocker arm through a supporting arm, and the guide wheel is in limiting contact with the inner surface of a guide groove connected with a door periphery structure. A support is fixedly arranged on the outer side of the cabinet door through bolts. A rotary shaft parallel to the axis of the latch shaft is arranged on the support. An internal lock is coaxially connected to the rotary shaft. A locking groove is formed in the internal lock. The stop block corresponds to the locking groove in position. An elastic reset device is arranged between the internal lock and the support. A slide way is arranged on the internal lock. In the closing and lifting processes of the cabinet door, the slide way is in contact with a rolling wheel connected to the door periphery structure. When the cabinet door is lifted completely, the slide way is completely disengaged from the rolling wheel on the door periphery structure. By the adoption of the lifting locking mechanism, on the basis of considering the guarantee of the safety and reliability of the cabinet door, the lifting and locking follow-up function is achieved, and the safety and reliability of the cabinet door are further improved.

Description

technical field [0001] The invention relates to a lifting and locking mechanism for a locking latch shaft of a cabin door of a civil aircraft, which belongs to the design of the cabin door of a civil aircraft. Background technique [0002] As an important part of the aircraft, the aircraft door is not only an important passage for passengers to board the aircraft under normal operating conditions, but also a passage for passengers to escape in case of an emergency. Based on this, the airworthiness clauses and regulations on the hatch have been revised several times, and the conditions have become more stringent. Because the lifting direction of the semi-blocked hatch is inward and upward, in the flight state, the pressurization force of the aircraft will help the hatch tend to close, so the safety is higher, and after it is fully opened, it is finally located outside the fuselage , which can save cabin space, many mature models (such as A320, A380, B787, etc.) and many new ...

AI Technical Summary

Problems solved by technology

[0004] After being lifted, the door of the type that is flipped outwards will cause the lifting mechanism to move due to external force or gravity, which will easily cause the door to sink. In order to ensure the normal closing of the door, it is essential to lock the entire lifting mechanism at the end of the lifting position.

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