JPH0450240Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a closure for a boarding bridge connected to an entrance/exit of an aircraft.

(Prior art) As a boarding bridge that connects an aircraft stopped at an appropriate location at an airport and an airport building, an intermediate passageway is installed between a base passage body that connects to the airport building and an aircraft connection cab that connects to the aircraft body. The intermediate passage body and the base passage body are horizontally rotatably connected via a circular chamber, and the intermediate passage body and the cab for connecting the fuselage are also horizontally rotatable via the circular chamber. Possibly linked is generally known. (Refer to Special Publication No. 61-5952). Such a boarding bridge is provided with a closure that comes into contact with the periphery of the entrance/exit of the fuselage to seal between the fuselage connection cab and the fuselage.

That is, the closure is usually formed into a bellows shape by connecting a gate-shaped base plate provided at the abutting port to the fuselage body and a cab for connecting the fuselage body with a tarpaulin (waterproof canvas). The board is constructed by connecting the upper ends of a pair of vertical plates with a horizontal plate, and a sealing member that comes into contact with the periphery of the entrance/exit of the aircraft body is attached to the front surface of this board. In this case, with the floor of the aircraft connection cab in contact with the aircraft, if the bellows expands and contracts to tilt the contact port forward, the contact port will bend to the vertical plate of the board. Therefore, it curves along the curved surface of the fuselage, and comes into contact with the upper edge and both side edges of the entrance/exit of the fuselage.

(Problems to be Solved by the Invention) However, in the case of the above-mentioned closure, there is a problem in that it is difficult to allow the abutting opening portion to abut against the periphery of the entrance/exit of the machine body without any gaps, regardless of the size of the machine body.

First, when the radius of curvature of the curved surface of the aircraft body is small, such as in a small aircraft, in order for the abutment port to abut against the aircraft body without any gaps, it is necessary to reduce the bending rigidity of the abutment port. However, in that case, when applied to an aircraft with a large radius of curvature, such as a large aircraft, only the upper and lower ends of the contact port will contact the aircraft, and the middle part will be bent and contact the aircraft. There are things I don't do. Conversely, if the bending rigidity of the contact port is increased, it will come into contact with the body of a large aircraft without any gaps, but when it comes into contact with the body of a small aircraft, the gap between the upper part of the contact port and the fuselage will be reduced. A gap is created between the two.
In such a case, rain and wind will enter the inside of the fuselage or the fuselage connection cab through the gap between the contact port and the fuselage.

That is, an object of the present invention is to improve sealing performance by allowing the abutment opening of the closure to abut against the fuselage body without any gaps, regardless of the size of the radius of curvature.

(Means for Solving the Problem) The present invention solves this problem by providing that when the contact opening of the closure is tilted forward, the lower part of the closure is bent to a greater degree due to the weight of the upper part. Focusing on the point that receives the load, we increased the bending rigidity of this contact opening toward the bottom, so that when tilted forward, the entire contact opening curves almost uniformly with a curvature that corresponds to the amount of tilt. This allows the closure to come into contact with the periphery of the entrance and exit of both small and large aircraft without any gaps.

In other words, the specific means for achieving this is as follows: In a boarding bridge equipped with a closure having an abutting port that tilts forward and contacts the periphery of the entrance/exit of the fuselage, the abutting portions of the closure on both sides of the entrance/exit are vertically A sealing member that abuts both sides of the entrance and exit is attached to the front surface of a board extending in the direction, and the board is constructed by connecting three or more boards divided into upper and lower parts, and each component board is connected to the lower part of the board. This is a boarding bridge closure characterized by its extremely high bending rigidity.

(Function) When the abutment opening of the closure is tilted forward, the lower portion receives a larger bending load due to the weight of the upper portion. However, since the bending rigidity of each constituent plate of the board is higher in the lower part of the board in contact with both sides of the entrance/exit of the fuselage, due to the above-mentioned forward tilting, the entire contact opening has a substantially uniform radius of curvature. It is possible to curve.

In other words, when the radius of curvature of the curved surface of the aircraft body is small, such as in a small aircraft, the amount of forward tilt of the abutment port will be increased, but the greater the amount of tilt, the more the force will be applied to the lower part of the abutment port. The bending load applied increases. Therefore, even if the lower part has high bending rigidity, it curves along the curved surface of the fuselage body with a relatively small radius of curvature, like the upper part, and comes into contact with the fuselage body without any gaps. On the other hand, in the case of contact with an aircraft body such as a large aircraft whose curved surface has a large radius of curvature, the abutment opening does not need to be tilted forward significantly and no large bending load is applied to the lower part. Due to this and the high bending rigidity of this lower part, the entire abutment opening is curved almost uniformly with a relatively large radius of curvature, and comes into contact with the fuselage without any gaps, without causing any bending in the lower part. It turns out.

(Effect of the invention) Therefore, according to the invention, the board of the portion that contacts the both sides of the entrance and exit of the closure body is constructed by connecting three or more plates divided into upper and lower parts, and each component board of this board Since the bending rigidity is higher as the lower part of the closure is lower, the abutment opening of the closure can be brought into contact with the body without any gap, regardless of the size of the radius of curvature of the curved surface of the body.

(Example) Hereinafter, an example of the present invention will be described based on the drawings.

FIG. 1 shows the overall structure of a boarding bridge 1. As shown in FIG. That is, this boarding bridge 1 includes a base passage body 2, an intermediate passage body 3,
As shown in FIG. 2, a fuselage connecting cab 4 connected to the fuselage W of the aircraft is sequentially provided. The base passage body 2 and the intermediate passage body 3 have a circular chamber 5 on the base end side.
The intermediate passage body 3 and the cab 4 for connecting the fuselage are horizontally rotatably connected by a driving means (not shown) through a circular chamber 6 on the distal end side. possible to be connected. A shutter 8 for opening and closing the communication port 7 to the cab 4 for connecting the fuselage is provided in the circular chamber 6 on the tip side.

The base passage body 2 is connected to an airport building, and is supported on the road by pillars 9. The intermediate passage body 3 is formed by fitting an inner tube 3a and an outer tube 3b so that they can expand and contract. In this case, the inner cylinder 3a is vertically movably connected to the proximal circular chamber 5, and the outer cylinder 3b is supported by vertically extendable traveling legs 10, and is connected to the distal circular chamber 6. There is.

Then, a bellows-shaped closure 11 is provided at the periphery of the connecting port 4a of the fuselage connecting cab 4 to the fuselage W, which is brought into contact with the fuselage W and seals between the fuselage connecting cab 4 and the fuselage W. is provided. This closure 11 is provided with an abutting port 13 to the body W at the front end of a bellows part 12, and as shown in FIG. While in contact with the edge, the abutment opening 13 of the closure 11 to the body W is tilted forward so as to come into contact with the upper edge and both side edges of the entrance of the body W.

That is, the bellows portion 1 of the closure 11
2 is composed of a plurality of frames made of spring steel formed into a gate shape, and a bellows cover 15 made of a nylon tarpaulin placed over the frames. In addition, the contact port 13 of this closure 11
As shown in FIGS. 3 and 4, a sealing member 16 is attached to the front surface of a gate-shaped board section by connecting the upper ends of a pair of vertical boards 17, 17 extending in the vertical direction with a horizontal board 18. It is composed of The bellows cover 15 has its front edge connected to the base plate, and its rear edge connected to the fuselage connection cab 4.

The vertical board 17 is constructed by connecting three vertically divided boards, that is, an upper plate 17a, a middle plate 17b, and a lower plate 17c, with connecting plates 17d and 17d. In this case, the lower plate 17c is the vertical substrate 17
The upper plate 17a and the middle plate 17 have a length of approximately 1/2 of the total length of the
b is approximately 1/4 of the total length of the vertical substrate 17. Each of the upper, middle, and lower plates 17a to 17c has a thickness (for example, 2.3 mm,
(3.2mm, 4.5mm, etc.) The lower the thickness, the higher the bending rigidity. Also,
At the center of the back of the vertical board 17, there is a
A large number of rectangular pipes 19 which are independent of each other and whose axes are horizontal are arranged and fixed one above the other. Furthermore, a tilting means 2 for tilting the abutment opening 13 of the closure 11 forward is provided between the base connecting cab 4 and the back surface of the horizontal base plate 18.
0 is connected.

Therefore, in the closure 11 having the above structure, the portions of the abutting port 13 that come into contact with both side edges of the entrance and exit of the body W are connected to each of the constituent plates 17a to 17 of the vertical base plate 17.
Since the bending rigidity of c is higher as it goes lower, it follows that the bending rigidity is higher as it goes lower. When connecting to the fuselage W, the boarding bridge 1 is operated to bring the floor 14 of the fuselage connection cab 4 into contact with the lower edge of the entrance/exit of the fuselage W, and the contact port 13 of the closure 11 is brought into contact with the lower edge of the entrance/exit of the fuselage W. The tilting means 20 utilizes the expansion and contraction of the bellows portion 12 to tilt it forward.

That is, when the radius of curvature of the curved surface of the aircraft body W is small, such as in a small aircraft, the amount by which the abutting port 13 is tilted forward is increased. In this case, as the amount of tilt increases, the bending load acting on the lower part of the abutment port 13 increases. Therefore, this contact port 13
Although the bending rigidity of the lower part is high as described above, it is curved with a relatively small radius of curvature like the upper part, that is, the entire abutting port 13 is approximately evenly curved along the curved surface of the fuselage W with a small radius of curvature. Curved, this aircraft W
The sealing member 16 is brought into contact with the seal member 16 without any gap. At this time, each square pipe 19 on the back surface of the vertical substrate 17 contributes to making the curvature of the vertical substrate 17 uniform.

On the other hand, in the case of contact with a machine body W having a curved surface with a large radius of curvature, such as a large machine, the amount of forward tilting of the contact port 13 is reduced. In this case, since the amount of inclination is small, a large bending load does not act on the lower part of the abutment port 13. Therefore, the abutment opening 13 has a relatively large radius of curvature as a whole without bending in the lower part because no large bending load is applied to the lower part and the lower part has high bending rigidity. The sealing member 16 is curved substantially uniformly, and the sealing member 16 is brought into contact with the body W without a gap.

In the above embodiment, the vertical board is divided into three upper and lower boards, but if it is configured with four or more boards with different thicknesses, the bending rigidity of the vertical board will increase from the top end to the bottom end. Of course, by increasing the height continuously, the curvature of the entire contact opening can be made more uniform.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, with FIG. 1 being a perspective view of the boarding bridge, FIG. 2 being a partially sectional side view showing the closure, and FIG. 3 being a partial view showing the abutment opening of the closure. The omitted side view and FIG. 4 are rear views showing the vertical substrate of the abutment opening of the closure. DESCRIPTION OF SYMBOLS 1... Boarding bridge, 11... Closure, 13... Contact opening part, 16... Seal member,
17... Vertical board, 17a... Upper plate, 17b... Middle plate, 17c... Lower plate, 17d... Connecting plate, W...
Aircraft.

Claims (1)

[Scope of utility model registration request] In a boarding bridge equipped with a closure having an abutment portion that tilts forward and abuts the periphery of the entrance/exit of the fuselage, the abutting portions of the closure on both sides of the entrance/exit are attached to the front side of a board extending in the vertical direction on both sides of the entrance/exit. A sealing member that contacts the edge is attached, and the board is constructed by connecting three or more plates divided into upper and lower parts, and each constituent plate has a higher bending rigidity as the lower one is. A boarding bridge closure characterized by: