SU199673A1 - DOOR-TRAP FOR AIRCRAFT - Google Patents

Description

The invention relates to aeronautical engineering and can be used on passenger and transport aircraft.

Famous gangways are opened by means of hinges located on the threshold. These hinges perceive and transmit to the fusell the entire load from the load on the ladder. However, a door-ladder of this type cannot be used on modern air liners with hermetic cabs and a high position of the fuselage above the level of the aerodrome.

The proposed door-ladder is equipped with a folding section with steps and an automatically extending strut, one end of which plots into the protrusion on the same body, and the other end fixed to the door. The folding mechanism is interlocked with the hydraulic cylinder with openings consisting of a hydraulic cylinder with a spring mounted at the bottom of the section and a drum mounted on the door with coils to which cables in the opposite direction are connected, one end of which is connected to the hydraulic rod and the spring of the section.

FIG. 1 shows a door-ladder in the open position, and FIG. 2 - the same, in the closed position. Door / hinged hinged

Section 2. In addition, the door-baffle includes a telescopic handrail 3, a hydraulic cylinder 4 to open the doors, an automatically extending strut 5 of the door and a lifting mechanism for section 2 consisting of a drum 6 mounted

stationary at the upper end of the door, two coils 7, on which the cables are wired to the opposite sides, with one end connected to the rod of the hydraulic cylinder 8 and the other to the spring I Mounted on the hinged section 2.

To open the door, its locks are opened, and then from the control panel a command is given to the hydraulic cylinder 4. Half-way through the stroke of the hydraulic cylinder 4, the hydraulic cylinder 8 is given a command to stop it. Spring 9, not meeting the resistance of the hydraulic cylinder 8, winds the cable from the coils 7 of the drum 6, turning the folding section 2 and opening the door of the ramp. The hinged section 2, departure from the door with the help of tg, puts in strut the strut 5 between the fuselage and the ladder. When the door-ladder touches the ground, the hydraulic cylinders are turned off, after which a telescopic tube is pulled out of the fuselage, which is attached to a lock.

A door-ladder for an aircraft, containing a sheathed frame with steps on the inside, hinges attached to the fuselage, a hydraulic cylinder fixed in the same body and connected by HITOKOM with a lever on the door, locks and sealing hoses, located around the door contour and folding handrails, connected to the fuselage and the door, characterized in that, in order to increase reliability and ensure the autonomy of its use on devices with high

fusell, it is provided with a folding section with steps, and an automatically extending strut, one end of which rests on the protrusion on the same fusel, and the other is fixed on the door, by a folding mechanism interlocked with an opening hydroelectric valve, consisting of an IZ hydraulic cylinder with a spring, mounted at the bottom of the section , and a drum with coils stuck on the door, the kOTOpbie is wound in the opposite direction by cables, one end of which is connected to the hydraulic cylinder rod, and the other end is connected to the section spring.

 ) 9 & ilifi FIG.