WO2012133440A1

WO2012133440A1 - Protective bar device for aircraft cargo door

Info

Publication number: WO2012133440A1
Application number: PCT/JP2012/057980
Authority: WO
Inventors: 祐輝柳川
Original assignee: 三菱重工業株式会社
Priority date: 2011-03-31
Filing date: 2012-03-27
Publication date: 2012-10-04

Abstract

In order to increase the safety and work efficiency of a worker loading and unloading cargos into and from a cargo compartment using a belt loader vehicle and to increase the loading capacity of the cargo compartment while ensuring that the cargos and the cargo door are protected, this protective bar device (14) for an aircraft cargo door is provided with a pair of protective bars (15) which open from the center and which are provided to the opening (5) for a cargo door (4) through which cargos are loaded into and unloaded from the cargo compartment. The protective bars (15) can pivot between an open position (15a) at which the protective bars (15) are pivoted to the outside of the aircraft from the opening (5) and a closed position (15b) at which the protective bars (15) are folded to the inside of the aircraft from the opening (5) to close the opening (5). At the open position (15a), the protective bars (15) can be affixed by first affixation means (such as latches (19)) at positions at which the protective bars (15) are extended outward so as to be parallel to each other from the vicinities of both vertical sides of the opening (5). At the closed position (15b), the protective bars (15) are affixed by second affixation means (such as buckles (21)) at positions separated a predetermined distance to the inside of the aircraft from the positions of the cargo door (4) and the opening (5).

Description

Protective fence device for aircraft cargo door

The present invention relates to a protective fence device for cargo doors such as a bulk cargo room of an aircraft.

In addition to passenger cabins, passenger aircraft are equipped with a container cargo room for loading container-like cargo and a bulk cargo room for loading passenger luggage. When loading / unloading container-like loads into / from the container / cargo compartment, a lift truck equipped with a platform that moves up and down in parallel in the vertical direction as disclosed in Patent Document 1 is used to load and unload safely and smoothly. Has been done.

On the other hand, passenger luggage is not accommodated in containers and is not uniform in size and shape. Therefore, in general, it remains in bulk (bulk) and is transported from the ground to the bulk cargo room by a belt-loader vehicle. Carry in or out of the bulk cargo room to the ground. A belt-loader vehicle is a belt-conveyor-type transfer machine that runs between the ground and the opening of the bulk cargo room. It can run on the ground and be positioned according to the position of the cargo door on the aircraft. Can do.

During ground work, the aircraft's fuselage always shakes lightly up and down and left and right under the influence of ground wind, passengers getting on and off, refueling, loading and unloading, etc. In many cases, a gap of about 5 to 10 cm is always secured between the tip of the loader and the fuselage even during loading and unloading of the load so that the two do not touch each other and break each other.

Some loaders of belt-loader vehicles are equipped with fences and handrail-like security fences on both sides, but in order to avoid contact with the fuselage and cargo doors, those that do not have security fences, or near the tip of the loader There are many things that are not provided. A thick rubber pipe-shaped buffer member is attached to the tip of the loader.

Japanese Patent No. 3523108

The cargo door of the bulk cargo room may be at a height of about 3 m from the ground, for example, and the worker who loads and unloads the luggage stands at the tip of the loader (belt conveyor) of the belt loader car. It is necessary to open and close the door of the bulk cargo room and to walk into and out of the bulk cargo room on an inclined loader. In addition, this worker must stand in the bulk cargo room, and load and unload the load on the loader tip while he / she embarks on the outside from the cargo door opened at a high place. As described above, the tip of the loader is arranged at a distance of about 5 to 10 cm from the airframe, and the relative position between the loader tip and the airframe always fluctuates, and the loader tip has a flexible pipe-shaped buffer. Since there are many belt loader vehicles that are provided with members and are not equipped with security fences, workers are forced to behave fairly unstable and unsafely.

As another issue, bulk cargo tends to collapse in the bulk cargo room during flight, and if the collapsed cargo collides with or leans against the inside of the cargo door, the cargo door may be damaged, Luggage may fall at the same time that the door is opened. In order to avoid this, a considerable space inside the cargo door is partitioned by a net or the like so that no luggage can be placed there. For this reason, the load amount of the cargo door was sacrificed.

The present invention has been made in view of such circumstances, and improves the safety and workability of an operator who loads and unloads cargo in a cargo compartment by means of a belt-loader vehicle, and protects cargo doors and luggage. An object of the present invention is to provide a protective fence device for an aircraft cargo door capable of increasing the load capacity of the cargo compartment.

A first invention for solving the above-described problem is provided with a pair of double-opening protective fences provided at an opening of a cargo door for taking cargo into and out of a cargo compartment, and the protective fence is provided with respect to the opening. It is possible to rotate between an open position opened to the outside and a closed position that is folded inward with respect to the opening to close the opening. It can be fixed by the first fixing means at a position extending parallel to the outside from the vicinity of the vertical side, and at the closed position, a predetermined interval is provided on the inner side from the position of the cargo door and the opening. The position is fixed by the second fixing means.

According to the above configuration, when the loader of the belt-loader vehicle for taking cargo into and out of the cargo compartment is bridged over the opening of the cargo compartment, the protective fence is rotated to the open position so that both vertical sides of the opening It fixes by the 1st fixing means in the position extended in parallel toward the outward from the vicinity. Thus, the protective fences are arranged in a fence shape on both sides near the tip of the loader. For this reason, the safety and workability of workers who go in and out of the bulk cargo room through the loader, and stand in the bulk cargo room and unload the half body from the cargo door to load and unload the load at the tip of the loader Can be improved.

Also, when the protective fence is placed in the closed position folded inside the aircraft, the protective fence is fixed by the second fixing means at a position spaced apart from the cargo door by a predetermined distance. For this reason, even if a bulk load collapses inside the cargo compartment during flight, the collapsed load can be prevented from leaning on the inside of the cargo door, and the cargo door can be protected. In addition, since it is not necessary to partition the space inside the cargo door with a net or the like so as to prevent objects from being placed as in the prior art, the load capacity of the cargo compartment can be increased.

Further, the second invention is characterized in that, in the first invention, the protective fence is fixed by the second fixing means in a state of being overlapped with each other in the closed position.

According to the above configuration, when the protective fence is in the closed position, the two protective fences are fixed in a state where they are overlapped with each other. Therefore, even if the protective fence is made lightweight, it has sufficient strength against the cargo door. It can function as a protective fence and protect the cargo door.

In addition, a third invention is the cargo according to the first invention, wherein the guard fence can visually recognize the inside of the cargo compartment at the closed position, and is mounted in the cargo compartment through the guard fence. It is characterized by a porous shape that can be adjusted in position.

According to the above configuration, even if the bulk load collapses inside the cargo compartment during the flight and the collapsed load leans inside the protective fence, the protective fence is porous. The load collapse situation can be visually recognized from the outside of the door, and the position of the operator can be adjusted such as pushing back the load collapsed by inserting the hand through the hole of the protective fence. Therefore, it is possible to protect the cargo door by protecting the cargo door and preventing the collapsed cargo from falling outside when the protective fence is opened.

According to a fourth invention, in the first invention, a support shaft that pivotally supports the guard fence so as to be rotatable between the open position and the closed position, with respect to the opening in a plan view. And the distance between the support shafts is set wider than the distance between both vertical sides of the opening, and the guard fence is in the closed position from the support shaft to the inside of the machine in a plan view. A planar shape that changes direction so as to be parallel to the opening after extending.

According to the above configuration, since the support shaft that pivotally supports the protective fence is located inside the cargo compartment opening and away from the opening area of the opening in the longitudinal direction of the fuselage, the support shaft is open to the opening. Does not protrude into the area. For this reason, the support shaft does not get in the way during loading and unloading work, and workability during loading and unloading is not reduced.

Also, the protective fence can be separated from the cargo door to the inside of the machine at a predetermined interval in the closed position while the support shaft is arranged near the inner wall of the cargo compartment. For this reason, it is possible to protect the cargo door by separating the protective fence from the cargo door in the closed position while preventing the support shaft from interfering during loading and unloading operations. In addition, compared with the case where a protection fence is formed in linear form by planar view, the protrusion amount of the protection fence placed in the open position can be enlarged.

The fifth invention is characterized in that, in the first invention, the guard fence is formed to have flexibility.

According to the above configuration, since the protective fence formed so as to be flexible has shock absorption, even if the cargo collides with the protective fence during the flight, And the protection fence can be prevented from being damaged.

The sixth invention comprises a pair of double-opening protective fences provided at the opening of the cargo door for taking cargo into and out of the cargo compartment, and the protective fence is opened to the outside of the machine with respect to the opening. And a closed position that is folded inward with respect to the opening to close the opening, and in the open position, outward from the vicinity of both vertical sides of the opening. Can be fixed by the first fixing means at positions along both sides of the loader tip of the belt loader vehicle that extends toward the opening and close to the opening, and in the closed position, the position of the cargo door and the opening It is characterized by being fixed by a second fixing means at a position spaced a predetermined distance from the inside of the machine.

According to the above configuration, the protective fence placed in the open position is fixed by the first fixing means in a state along the both sides of the loader tip of the belt loader vehicle adjacent to the opening of the cargo compartment. The fence is arranged in a fence shape on both sides in the vicinity of the tip of the loader, so that the safety and workability of the worker who loads and unloads the luggage can be significantly improved.

As described above, according to the protective fence device for an aircraft cargo door according to the present invention, while improving the safety and workability of an operator who loads and unloads a cargo in a cargo compartment by a belt loader vehicle, the cargo door and The load capacity of the cargo compartment can be increased while protecting the cargo.

It is a figure which shows the state which is loading / unloading a load with the belt loader vehicle to the aircraft to which the guard fence apparatus which concerns on embodiment of this invention was applied. It is an external view which shows the state in which a guard fence is in a closed position and a cargo door is opened. It is a longitudinal cross-sectional view of the airframe which follows the III-III line of FIG. FIG. 4 is a plan sectional view showing a first embodiment of the protective fence device according to the present invention by a cross section taken along line IV-IV in FIG. 3, and is a view showing a state where the protective fence is in an open position. FIG. 4 is a plan sectional view showing a first embodiment of the protective fence device according to the present invention by a cross section taken along line IV-IV in FIG. 3, and is a view showing a state where the protective fence is in a closed position. It is a longitudinal cross-sectional view of the airframe which shows the state in which cargo collapse occurred in the cargo compartment. It is a flat view which shows 2nd Embodiment of the protection fence apparatus which concerns on this invention, and is a figure which shows the state which has a protection fence in an open position. It is a flat view which shows 2nd Embodiment of the protection fence apparatus which concerns on this invention, and is a figure which shows the state which has a protection fence in a closed position.

Hereinafter, two embodiments of the protective fence device according to the present invention will be described with reference to the drawings.

[First Embodiment]
FIG. 1 is a view showing a state in which a load is loaded and unloaded on an aircraft to which the guard fence device according to the first embodiment of the present invention is applied. A bulk cargo room 2 (cargo compartment) is provided at the tail of the aircraft body 1 or the like, and a passenger's luggage 3 is loaded in a bulk state. An opening 5 that can be opened and closed by a cargo door 4 is provided on one side of the bulk cargo chamber 2, and the cargo door 4 is opened, for example, above and outside the fuselage.

The belt-loader vehicle 6 is generally used when loading and unloading loads. A belt-conveyor-type loader 8 is installed on a travelable vehicle body 7 so that the angle can be adjusted by an angle adjustment mechanism 9. Is. A loader 8 is bridged between the ground and the cargo door 4 of the fuselage 1, and the cargo 3 transported by the cargo transport vehicle 10 or the like is transported to the bulk cargo chamber 2 or unloaded from the bulk cargo chamber 2. At this time, a gap of about 5 to 10 cm is maintained between the thick rubber pipe-shaped cushioning member 11 provided at the tip of the loader 8 and the airframe, and damage due to contact between the airframe 1 and the loader 8 is avoided.

As shown in FIGS. 2 to 4A and 4B, a protective fence device 14 is installed in the opening 5. The protective fence device 14 includes a pair of double-opening protective fences 15. The protective fence 15 is formed of a material such as aluminum alloy or reinforced resin so as to be lightweight and flexible (impact absorbing property). Further, the protective fence 15 is formed in a porous shape such as a lattice shape (grill shape), and the inside of the bulk cargo chamber 2 can be visually recognized in a state where the opening portion 5 is closed (a closed position 15b described later). In addition, it is possible to adjust the position of the load 3 mounted in the bulk cargo room 2 through the protective fence 15.

As shown in FIG. 3, FIG. 4A, and FIG. 4B, a plurality of support brackets 16 are fixed to the opening 5 in the up-down direction on the inside of the machine and in the vicinity of both vertical sides of the opening 5. A protective fence 15 is pivotally supported via a shaft 17. The support bracket 16 has a planar shape that extends obliquely from the inner wall of the opening 5 inside the machine and projects into the opening range of the opening 5. The guard fence 15 is centered on the support shaft 17 and is opened to the outside of the machine with respect to the opening 5, and the closed position 15 b is folded to the inside of the machine to close the opening 5. It is possible to rotate between the two.

In the open position 15 a, the protective fence 15 extends parallel to the outside from the vicinity of both vertical sides of the opening 5, or along both sides of the tip of the loader 8 of the belt loader vehicle 6 adjacent to the opening 5. Can be fixed in position. For example, as shown in FIG. 4A, the position can be fixed by a latch 19 (first fixing means) provided on the support bracket 16. In addition, you may make it fix the guard fence 15 to the open position 15a with the fixing means of another structure. For example, a pin (not shown) for closing and fixing the cargo door 4 provided in the frame of the opening 5 may be held.

In the closed position 15b, as shown in FIGS. 3 and 4B, the protective fence 15 is overlapped with each other at a predetermined distance from the position of the cargo door 4 and the opening 5 to the inside of the machine. These are fixed to each other by a buckle 21 or a band (second fixing means). The length of each protection fence 15 is preferably set to a length that extends to the vicinity of the support shaft 17 of the opposing protection fence 15 at the closed position 15b.

The guard fence device 14 configured as described above operates as follows.
When the loader 8 of the belt loader vehicle 6 is bridged over the opening 5 of the bulk cargo chamber 2 and loads are loaded and unloaded from the opening 5, the guard fence 15 is rotated to the open position 15a to latch. 19 to fix. As a result, the protective fence 15 extends in parallel from the vicinity of both vertical sides of the opening 5 toward the outside of the machine, and is arranged in a fence shape so as to sandwich both sides of the vicinity of the tip of the loader 8.

Therefore, an operator who stands near the tip of the loader 8 and enters and exits the bulk cargo room 2 can urgently grasp the protective fence 15 even if the body balance is lost, Injuries can be prevented. Further, it is possible to prevent the luggage from accidentally falling from the loader 8. Therefore, the safety and workability of the loading / unloading work can be dramatically improved.

The protective fence 15 only needs to be strong enough to ensure that it can be urgently gripped by an operator as described above, and the parts can be replaced if such a load is applied several times. By doing in this way, the effect which improves safety can be exhibited, making it a lightweight and cheap fence structure.

Further, when the protective fence 15 is placed at the closed position 15b folded inside the machine, the protective fence 15 is fixed by a fixing means such as a buckle 21 at a position spaced apart from the cargo door 4 at a predetermined interval. For this reason, as shown in FIG. 5, even if the bulk cargo 3 collapses in the bulk cargo chamber 2 during the flight, the collapsed luggage 3 collides with or leans against the inside of the cargo door 4. This can be prevented and the cargo door 4 can be protected. Moreover, since it is not necessary to partition the space inside the cargo door 4 with a net or the like so as to prevent objects from being placed as in the prior art, the load capacity of the bulk cargo chamber 2 can be increased. In connection with this, since the above-mentioned net can be removed, an increase in weight due to the installation of the protective fence device 14 can be offset.

Since the protective fences 15 in the closed position 15b are fixed to each other by a fixing means such as a buckle 21 in a state where they are overlapped with each other, even if the protective fences are made lightweight, the protective fences have sufficient strength against the cargo door 4 And the cargo door 4 can be effectively protected.

Further, the protective fence 15 can be visually recognized inside the bulk cargo chamber 2 at the closed position 15b, and can adjust the position of the load 3 mounted in the bulk cargo chamber 2 through the protective fence 15. Is. For this reason, even if the bulk cargo 3 collapses inside the bulk cargo chamber 2 during flight and the collapsed luggage 3 leans against the inside of the protective fence 15, the protective fence 15 is porous. In addition, it is possible to visually check the situation of the collapse of the load from the outside of the protective fence 15 and to adjust the position such as pushing back the collapsed luggage 3 by the operator inserting a hand through the hole of the protective fence 15. Therefore, the cargo door 4 can be protected, and when the protective fence 15 is opened, the cargo 3 that has collapsed can be prevented from falling outside, and the cargo can be protected.

Moreover, since the protective fence 15 is formed so as to have flexibility, the protective fence 15 has a shock absorbing property. Even if the luggage 3 in the bulk cargo chamber 2 hits the protective fence 15, the luggage 3 or the protective fence. 15 can be prevented from being damaged.

Since such a protective fence device 14 can be configured simply and inexpensively, it can be easily attached not only to newly manufactured aircraft but also to existing aircraft. For this reason, even if safety equipment such as a fence is not provided in the loader 8 of the belt-loader vehicle 6 installed at airports around the world, the protective fence device 14 is provided on the fuselage side to load and unload the luggage. It is possible to improve the safety and workability of workers.

[Second Embodiment]
6A and 6B are plan sectional views showing a protective fence device 24 according to a second embodiment of the present invention. Here, the structure of each part except the guard fence 25 which comprises the guard fence apparatus 24, and the support bracket 26 and the support shaft 27 which support this are the same as the structure of 1st Embodiment shown to FIG. 4A and FIG. 4B. .

In this guard fence device 24, a support shaft 27 that pivotally supports the guard fence 25 so as to be rotatable between an open position 25a and a closed position 25b is located inward of the opening 5 of the fuselage 1 in plan view. And the space | interval W1 of the support shaft 27 is set wider than the space | interval W2 of both the vertical sides of the opening part 5 (refer FIG. 6B). Unlike the support bracket 16 in the protective fence device 14 of the first embodiment, the support bracket 26 that holds the support shaft 27 extends short from the inner surface of the opening 5 toward the inside of the machine at a right angle.

On the other hand, the protective fence 25 has a planar shape in which the direction is changed so as to be bent or curved and parallel to the opening 5 after extending from the support shaft 27 once in the plane at the closed position 25b in a plan view. Yes. That is, the protective fence 25 includes a short side 251 extending inward from the support shaft 27 and a long side 252 that changes direction from the tip of the short side 251 and is parallel to the opening 5 at the closed position 25b. It has a substantially L-shape. In the closed position 25b, the long sides 252 overlapping each other are fixed to each other by a fixing means such as a buckle 21 or a band.

When the protective fence 25 formed in a substantially L shape is rotated to the open position 25a (see FIG. 6A), its short side 251 is parallel to the inner wall of the fuselage 1, and the long side 252 is near both vertical sides of the opening 5. Extending outward from. That is, the substantially L-shaped protective fence 25 in a plan view protrudes from the inside of the opening 5 to the outside. And the position of the protection fence 25 placed in the open position 25a can be fixed by the latch 19 provided in the support bracket 16 as in the case of the first embodiment. This fixing structure may be another type.

According to the guard fence device 24 configured as described above, the support shaft 27 that pivotally supports the guard fence 25 is inside the opening 5 of the bulk cargo chamber 2 and the opening area of the opening 5. Located apart in the front-rear direction. For this reason, the support shaft 27 does not protrude into the opening region of the opening 5. Therefore, the support shaft 27 and the support bracket 26 do not get in the way during loading / unloading work, and workability during loading / unloading of the luggage does not deteriorate.

Further, while the support shaft 27 is disposed in the vicinity of the inner wall of the bulk cargo chamber 2, when the protective fence 25 is rotated to the closed position 25 b, the longer side is equal to the length of the short side 251 of the protective fence 25. 252 can be arranged at a position spaced from the cargo door 4 to the inside of the machine. For this reason, when the protective fence 25 is opened, the support shaft 27 and the support bracket 26 are not disturbed during loading and unloading work, and when the protective fence 25 is closed, the protective fence 25 is separated from the cargo door 4 and the cargo door 4. Can be protected.

Furthermore, compared with the case where the guard fence 15 is formed linearly in plan view as in the guard fence device 14 of the first embodiment, the opening 5 of the guard fence 25 (long side 252) placed at the open position 25a. The amount of protrusion from the outside to the outside can be greatly extended. This is because the guard fence 25 is substantially L-shaped in plan view, so that the support shaft 27 is displaced in the front-rear direction of the aircraft from the extended line of the long side 252 at the open position 25a. When rotating to 25b, the guard fence 25 (long side 252) is pivoted so as to be pulled into the inside of the opening 5, and it is difficult to interfere with the support shaft 27 and the support bracket 26 of the opposing guard fence 25. It is. Thus, since the protrusion amount to the exterior from the opening part 5 of the protection fence 25 can be enlarged, the stability of the operator who loads and unloads a load can be improved more.

Note that the present invention is not limited to the configuration of the above-described embodiment, and may be modified to the extent that it does not depart from the scope of the claims. For example, the shape of the

protective fences

15 and 25 is lightweight, and the inside of the bulk cargo chamber 2 can be visually recognized from the outside in the closed state, and the bulk cargo chamber 2 is passed through the

protective fences

15 and 25. What is necessary is just to be a porous shape in which the position of the loaded luggage 3 can be adjusted.

1 Airframe 2 Bulk cargo room (cargo room)
3 Luggage (cargo)
4 Cargo door 5 Opening 6

Belt loader vehicle

14, 24

Guard fence device

15, 25

Guard fence

15 a, 25 a

Open position

15 b, 25

b Close position

16, 26

Support bracket

17, 27 Support shaft 19 Latch (first fixing means )
21 Buckle (second fixing means)
W1 Space between support shafts W2 Space between both vertical sides of opening

Claims

Provided with a pair of double-opening guard fences provided at the opening of the cargo door for taking cargo into and out of the cargo compartment,
The guard fence is rotatable between an open position that is open to the outside of the machine with respect to the opening and a closed position that is folded to the inside of the machine to close the opening. With
In the open position, it can be fixed by the first fixing means at a position extending in parallel outward from the vicinity of both vertical sides of the opening,
In the closed position, it is fixed by a second fixing means at a position spaced a predetermined distance from the position of the cargo door and the opening to the inside of the machine.
2. The protective fence device for an aircraft cargo door according to claim 1, wherein the protective fence is fixed by the second fixing means in a state of being overlapped with each other at the closed position.
The guard fence is porous so that the inside of the cargo compartment can be visually confirmed in the closed position and the position of the cargo mounted in the cargo compartment can be adjusted through the guard fence. The protective fencing device for an aircraft cargo door according to claim 1.
A support shaft that pivotally supports the protective fence so as to be rotatable between the open position and the closed position is on the inner side with respect to the opening in a plan view, and an interval between the support shafts is the opening. It is set wider than the interval between both vertical sides of the part,
2. The aircraft according to claim 1, wherein the guard fence has a planar shape that extends inward from the support shaft in a plan view and changes a direction so as to be parallel to the opening in the closed position. Protective fence device for cargo doors.
The guard fence device for an aircraft cargo door according to claim 1, wherein the guard fence is formed to have flexibility.
Provided with a pair of double-opening guard fences provided at the opening of the cargo door for taking cargo into and out of the cargo compartment,
The guard fence is rotatable between an open position that is open to the outside of the machine with respect to the opening and a closed position that is folded to the inside of the machine to close the opening. With
In the open position, it can be fixed by the first fixing means at a position along both sides of the loader tip of the belt loader vehicle that extends outward from the vicinity of both vertical sides of the opening and is close to the opening. Yes,
In the closed position, it is fixed by a second fixing means at a position spaced a predetermined distance from the position of the cargo door and the opening to the inside of the machine.