CN105667823A - Access ladder for aircraft - Google Patents

Abstract

The invention belongs to the structural technology of aircraft approaching equipment, and relates to an aircraft boarding ladder. The boarding ladder includes a connector (1), an upper ladder frame (2), a handrail (3), an lower ladder frame (4), a step (5), wheels (6), a hook (7), a rubber head rest (8) composition; the connector (1), the hook (7) and the rubber rest (8) are all connected to the upper end of the upper ladder frame (2) by fasteners; the connecting ear piece (9) of the upper ladder frame (2) The connecting lugs (9) of the lower ladder frame (4) are connected through shafts; the ladder steps (5) are connected with the upper ladder frame (2) and the lower ladder frame (4) through fasteners. The boarding ladder of the invention adopts a foldable aluminum alloy riveted structure, which can be used in common use on both sides of the variable section of the aircraft fuselage, that is, one ladder can be used for both purposes. It not only saves time and manpower, but also reduces weight and storage space, and is easy to use and quick to install.

Description

an airplane boarding ladder

technical field

The invention belongs to the structural technology of aircraft approaching equipment, and relates to an aircraft boarding ladder.

Background technique

The aircraft boarding ladder is an aircraft access device for boarding personnel to get on and off the plane. It is generally composed of connectors, upper ladder frames, handrails, lower ladder frames, steps, wheels, and hooks. The connecting piece is used for the connection between the aircraft boarding ladder and the aircraft door. If the left and right doors of the aircraft are located at the variable section of the aircraft fuselage, the deflection angles of the connecting parts of the boarding ladder and the upper ladder frame are different, so the traditional boarding ladder is only suitable for one-sided use at the variable section of the aircraft fuselage. Due to the limitation of the space used by the aircraft, the aircraft needs to be boarded on both sides. In order to solve this problem, two methods can be adopted: one is to equip two boarding ladders on the premise of meeting the time limit, which can be boarded on the left and right respectively. The lower part of the door frame is used, but it increases the carrying weight and storage space of the aircraft; the second is that only one boarding ladder is equipped, and the connecting parts of the boarding ladders on both sides are exchanged to meet the left and right boarding, which increases time and consumes manpower and reduces The time limit for attendance has expired. In addition, the steel structure of the traditional boarding ladder cannot realize the folding function, which not only takes up a lot of space, but also increases the weight, making it inconvenient to carry around.

Contents of the invention

The object of the present invention is to provide an aircraft boarding ladder that can be used on both sides of the variable section of the aircraft fuselage, has high work efficiency and is easy to carry around.

Technical scheme of the present invention is:

An aircraft boarding ladder is characterized in that: the boarding ladder includes a connecting piece 1, an upper ladder frame 2, a handrail 3, a lower ladder frame 4, a step 5, wheels 6, a hook 7, and a rubber headrest 8; The connector 1, the hook 7 and the rubber rest 8 are all connected to the upper end of the upper ladder frame 2 through fasteners; the connecting lug 9 of the upper ladder frame 2 is connected with the connecting ear piece 9 of the lower ladder frame 4 through a shaft; the ladder 5 Both the upper ladder frame 2 and the lower ladder frame 4 are connected by fasteners; the handrail 3 is installed on the right side of the upper ladder frame 2; the wheels 6 are installed at the lower end of the lower ladder frame 4; the rubber rest 8 is located at the upper end of the upper ladder frame 2 , is in contact with the skin of the aircraft body, and is used to prevent the boarding ladder from sliding after being stressed; there is a deflection angle between the connecting piece 1 and the upper ladder frame 2, and the deflection angle is the average value of the deflection angles on the left and right sides of the variable section of the aircraft fuselage; The connecting piece 1 is two identical pieces, including a terminal and a long rod; the terminal of the connecting piece 1 can prevent the connecting piece 1 from coming out of the hanging ladder hole at the bottom of the aircraft door frame; the connecting piece 1 The cross-sectional diameter of the long rod is the maximum value of the long rod cross-sectional diameter that can be loaded into the hanging ladder hole at the bottom of the left and right aircraft cabin door frames.

The upper and lower ladder frames of the boarding ladder are made of aluminum alloy.

The advantages of the present invention are: the boarding ladder of the present invention adopts a foldable aluminum alloy riveted structure of the ladder frame, which can be used in common use on both sides of the variable section of the aircraft fuselage, that is, one ladder can be used for both purposes. It not only saves time and manpower, but also reduces weight, reduces storage space, is easy to use, and is quick to install.

Description of drawings

Fig. 1 is the front view of the boarding ladder of the present invention;

Fig. 2 is the A direction enlarged view of the front view of the boarding ladder of the present invention;

Fig. 3 is a left view of the boarding ladder of the present invention;

Fig. 4 is a partially enlarged view of the left view of the boarding ladder of the present invention;

Fig. 5 is a folded view of the boarding ladder of the present invention;

Among them, 1-connector, 2-upper ladder frame, 3-handrail, 4-lower ladder frame, 5-step, 6-wheel, 7-hook, 8-rubber head rest, 9-connection ear piece.

detailed description

The present invention will be described in further detail below. Referring to Fig. 1, Fig. 2, Fig. 3 and Fig. 4, a kind of aircraft boarding ladder, it is made of connector 1, upper ladder frame 2, handrail 3, lower ladder frame 4, step 5, wheel 6, hook 7, rubber By head 8 composition. The connector 1, the hook 7 and the rubber rest 8 are all connected to the upper end of the upper ladder frame 2 through fasteners, the connecting lug 9 of the upper ladder frame 2 is connected with the connecting ear piece 9 of the lower ladder frame 4 through a shaft, and the ladder 5 It is connected with the upper ladder frame 2 and the lower ladder frame 4 by fasteners, the handrail 3 is installed on the right side of the upper ladder frame 2, and the wheels 6 are installed at the lower end of the lower ladder frame 4. When the staff connects with the lower part of the left or right boarding door frame of the aircraft on the ground, the connecting piece 1 moves along the chute at the lower part of the upper door frame of the aircraft, so that the whole ladder is firmly connected with the hanging frame at the lower part of the aircraft door frame. The ladder holes are connected, and the two wheels 6 at the bottom of the ladder frame are in contact with the ground firmly; when the staff is on the plane and there is no one on the ground to pick up the plane, the staff will directly board the hook 7 of the boarding ladder on the plane with the plane The door frame floor is connected, and the rubber head 8 on the top of the ladder frame is firmly in contact with the skin of the aircraft fuselage, which can effectively control the stability of the ladder, while the two wheels 6 at the bottom of the ladder frame are in firm contact with the ground. When it needs to be carried with the aircraft, the storage space can be reduced by folding the upper ladder frame, the lower ladder frame and the handrail, as shown in Figure 5.

The reason why the present invention improves versatility is: the deflection angle of the connecting piece of the boarding ladder and the upper ladder frame adopts the mean value of the deflection angles of the left and right sides at the variable section of the aircraft fuselage, and the cross-sectional diameter of the long rod of the connecting piece is uniform. The maximum cross-sectional diameter of the long rod installed in the hanging ladder hole at the lower part of the door frame of the left and right aircraft cabins realizes the universal connection of the left and right sides and reduces the carrying weight. For example: when the boarding ladder is used at the boarding door on the left side of the aircraft, the deflection angle between the connecting piece 1 of the boarding ladder and the upper ladder frame 2 is 60°; when the boarding ladder is used at the boarding door on the right side of the aircraft, the boarding The deflection angle between the connecting piece 1 of the machine ladder and the upper ladder frame 2 is 63°, the average value of the deflection angles on both sides is 61.5°, and the cross-sectional diameter of the long rod of the connecting piece is such that both the left and right aircraft cabin door hanging ladders can be installed. The maximum cross-sectional diameter of the long rod of the hole is Φ15, which realizes the common use of the left and right connecting parts.

In addition, through the folding mechanism, the storage space of the boarding ladder is reduced, the structure is simple, the cost is low, and the attendance efficiency is high.

The working principle of the present invention is: when the staff is connected to the lower part of the left boarding door or the lower part of the right boarding door door frame of the aircraft on the ground, the connecting part 1 moves along the chute at the lower part of the upper door frame of the aircraft, so that the whole ladder is firmly connected to the lower part of the door frame of the aircraft The aircraft is connected to the hole of the ladder, and the two wheels 6 at the bottom of the ladder frame are firmly in contact with the ground; The boarding door frame floor is connected, and the rubber rest head 8 on the top of the ladder frame is in firm contact with the skin of the aircraft fuselage, which can effectively control the stability of the ladder, while the two wheels 6 at the bottom of the ladder frame are in firm contact with the ground. When it needs to be carried with the aircraft, the storage space can be reduced by folding the upper ladder frame 2, the lower ladder frame 4 and the handrail 3.

Claims (2)

1. an aircraft boarding ladder is characterized in that: said boarding ladder comprises connector (1), upper ladder frame (2), handrail (3), lower ladder frame (4), ladder step (5), Wheels (6), hooks (7), and rubber rests (8); the connectors (1), hooks (7) and rubber rests (8) are all connected to the upper end of the upper ladder frame (2) by fasteners; The connecting lugs (9) of the upper ladder frame (2) are connected with the connecting lugs (9) of the lower ladder frame (4) through shafts; the steps (5) are connected with the upper ladder frame (2) and the lower ladder frame (4) Both are connected by fasteners; the handrail (3) is installed on the right side of the upper ladder frame (2); the wheels (6) are installed at the lower end of the lower ladder frame (4); the rubber rest (8) is located on the upper ladder frame (2) ) upper end, which is in contact with the skin of the aircraft body, and is used to prevent the boarding ladder from sliding after being stressed; there is a deflection angle between the connecting piece (1) and the upper ladder frame (2), and the deflection angle is about two The mean value of the side deflection angle; the connecting piece (1) is two identical parts, including a terminal and a long rod; the terminal of the connecting piece (1) can prevent the connecting piece (1) from the lower part of the aircraft door frame The hanging ladder hole at the hanging ladder hole; the cross-sectional diameter of the long rod of the connector (1) is the maximum value of the long rod cross-sectional diameter that can be loaded into the hanging ladder hole of the left and right aircraft cabin door frame bottoms. 2. The aircraft boarding ladder according to claim 1, further characterized in that: the upper ladder frame (2) and the lower ladder frame (4) of the boarding ladder are made of aluminum alloy.