Airplane cabin door slide rail position limiting structure

Abstract

The invention provides an airplane cabin door slide rail position limiting structure, which comprises a slide rail, a bushing, a position limiting stop block, a plug pin seat, a plug pin, a pin rod and a compression spring, wherein the slide rail is a groove-shaped part; an installing hole corresponding to a slide rail plug pin hole is also formed in the position limiting stop block; the plug pinseat is of a T-shaped structure with a center step hole; the projected end of the center step hole is provided with external screw threads; a wing-shaped installing table of the plug pin seat is fixedat the outer side of the groove bottom of the slide rail through a connecting element; the center step hole is coaxial with the plug pin hole of the slide rail; the plug pin is a step shaft part; a shaft shoulder is formed between the front end shaft and the back end shaft; the front end shaft is matched with a bushing; the shaft shoulder and the back end shaft can be embedded in the center stephole of the plug pin seat; the compression spring is connected onto the back end shaft in a bypassing manner; the tail end of the backend shaft is provided with a through hole for inserting and connecting the pin rod.

Description

technical field [0001] The invention belongs to the field of aircraft structure design and relates to a position-limiting structure for the slide rail of an aircraft cabin door. Background technique [0002] Aircraft fuselages are generally required to have many openings for entering and exiting various personnel compartments or equipment compartments. These openings usually need to be covered with various hatches (or hatches), which can be of the rotary hinged or sliding type. For the sliding hatch, a roller slide rail structure is generally designed, and the slide rail is used as a guiding device for the movement of the hatch rollers. A limit structure is designed at the end of the slide rail to limit the movement stroke of the door rollers and prevent the rollers from sliding out of the slide rails when they move beyond the limit position. [0003] In the prior art, the rigid limit stopper is connected to the end of the slide rail by bolts to limit the movement stroke o...

AI Technical Summary

Problems solved by technology

[0003] The existing technology is to connect the rigid limit stopper to the end of the slide rail through bolts to limit the movement stroke of the roller

During maintenance, the limit stopper needs to be removed only after the bolts are disassembled, which reduces the quickness of use

At the same time, the rigid limit stopper does not have the effect of damping vibration, which will cause a large impact force when the hatch moves to the limit position, and easily damage the hatch rollers

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