JP2747906B2 - Boarding Bridge Auto Leveler - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an auto-leveler (follow-up device) for a boarding bridge for an aircraft.

(Prior Art) For example, according to Japanese Patent Publication No. 59-3320, which is cited as prior art, a bridge (boarding bridge) moves toward the fuselage by transmitting a detector that detects that the tip of the bridge has contacted the fuselage. In the stopping, a detection wheel is provided rotatably at the tip of the bridge so as to transmit an ascending or descending signal to a bridge lifting / lowering cylinder by detecting rotation, and a lifting / lowering cylinder by the detection wheel It is described that the transmission to the motor is transmitted in forward and reverse directions by a wheel shaft that rotates with the rotation of the wheel, and is performed by one or two limit switches corresponding to the rotation direction.

A conventional auto leveler will be described with reference to FIG.
The auto-leveler 1 is mounted below the boarding bridge floor a. At the leading bridge of the boarding bridge floor A, a cushioning material B is provided so as to face an aircraft body (not shown). The auto-leveler 1 is configured to come into contact with the body surface of the aircraft when the boarding bridge is extended, and includes an electric motor 5, a sprocket 6 rotated by the electric motor 5, and another sprocket connected to the sprocket 6 by an endless chain 7. And a moving body 9 connected to the endless chain 7 is provided. The moving body 9 is constituted by a wheel 3 and a cylinder 11 containing a compression spring 10, and is provided so that the wheel 3 comes into contact with the surface of the body of the aircraft. The boarding bridge moves upon arrival of the aircraft, and the cushioning material B on the boarding bridge floor A
Stops at the position where it contacts the boarding gate of the aircraft. Boarding bridge floor A
The moving body 9 of the auto-leveler 1 mounted on the lower side is always in the retracted position where the limit switch 14 operates as shown in the figure, and the position of the wheel 3 is in the state where the compression spring 10 is most extended. When the cushioning material B comes into contact with the body, the limit switch C operates, the electric motor 5 operates, and the moving body 9 starts to move forward. When the wheel 3 comes into contact with the body, the wheel 3 stops, but the moving body 9 moves forward while compressing the compression spring 10, and then the operation of the limit switch 16 stops the motor 5 and stops the forward movement. This limit switch 16
Is adjusted in advance so that the pressing force of the foil 3 against the body surface is optimized. The wheel 3 is rotated in a clockwise direction in FIG. 1 by frictional force when the aircraft is lifted due to an increase or decrease in a load applied to the aircraft such as loading and unloading of passengers or loading / unloading of luggage, and counterclockwise when the vehicle is lowered. hand,
The position of the boarding bridge is vertically moved up and down by transmission according to the rotation direction. Then, even if the lifting and lowering of the aircraft is stopped, the following up and down movement of the boarding bridge is continued, and when the relation position between the boarding bridge floor and the boarding gate returns to the original level, the following switch is turned off and the up and down following stops.

(Problems to be Solved by the Invention) However, there is a case where the follow-up device does not operate due to some failure and the boarding bridge does not follow the vertical movement of the boarding port of the aircraft. In this case, conventionally, an alarm sounds and the following device stops,
It simply switched to manual input and activated the tracking device.

The present invention provides a countermeasure when the auto-leveler does not operate. When the auto-leveler is not operated, the backup wheel is moved forward to operate instead of the main wheel.

(Means for Solving the Problems) In order to match the boarding port of the aircraft with the boarding bridge floor, the present invention is directed to a method in which a wheel provided at the leading end of the boarding bridge is pressed against the outer surface of the machine body and the boarding bridge for the machine body is pressed. It is assumed that an auto-leveler detects the relative vertical movement of the tip and corrects the vertical position in accordance with the amount of movement. The wheel is provided with a main wheel and a backup wheel, and the wheels are arranged in parallel with each other so as to be able to move forward and backward with respect to the outer surface of the machine body by respective driving means. In order to detect the rotation angle of the main wheel in a state where only the main wheel is in the forward position and pressed against the outer surface of the fuselage, an alarm is issued when the rotation angle of the main wheel exceeds a predetermined first angle. Angle detection means for transmitting a forward drive signal for driving the backup wheel forward by the drive means and pressing the backup wheel against the outer surface of the machine when the rotation angle reaches the second angle larger than the first angle. Is provided.

(Operation) The present invention is configured as described above. In a state where only the main wheel is pressed against the outer surface of the machine, when the rotation angle of the main wheel exceeds the first angle, an alarm signal for issuing an alarm is detected. When the rotation angle reaches a second angle larger than the first angle, the angle detection means transmits a forward drive signal for causing the drive wheel to advance the backup wheel. Thus, based on the detection of the vertical movement of the leading end of the boarding bridge relative to the aircraft by the backup wheel, the vertical position of the boarding bridge floor is corrected according to the amount of movement.

Example Next, an example of the present invention will be described with reference to the drawings.
FIG. 1 is a side view of the auto leveler 1 mounted on the boarding bridge,
FIG. 2 is a plan view and FIG. 3 is a front view. As shown in FIGS. 2 and 3, two autolevelers 1 are symmetrically mounted on both sides of a base plate 2, one of which is a main wheel 3 and the other is a backup wheel 4. The base plate 2 is attached to the lower side of the boarding bridge floor A. A state in which a striker 3a is formed at a fixed angle on a rotating portion of the main wheel 3, a proximity switch 12 is mounted on a fixed side of the striker 3a, and the proximity switch 12 is located at a center position of the striker 3a. Is in normal use. Also, as in the case of the main wheel 3, the striker 4a is formed at a fixed angle on the rotating portion of the backup wheel 4 similarly to the striker 3a, and the proximity switch 13 is provided on the fixed side. .

The operation state of this embodiment together with its operation will be described.
When the striker 3a attached to the main wheel 3 rotates beyond the proximity switch 12 with respect to the proximity switch 12 constituting the angle detecting means shown in the drawing, the proximity switch 12 is turned off and an alarm is issued. FIG. 4 is a view showing the situation.
FIG. 1 shows the rotation angle of the main wheel 3 in the case where the main wheel 3 rotates clockwise in FIG. 1. Normally, the main wheel 3 rotates from 0 ° to β ° when the proximity switch 12 is on. Sometimes, the follow-up switch is turned on to start the follow-up, and the follow-up switch is turned off when the rotation of the main wheel 3 returns from β ゜ to γ ゜. Then, even if the main wheel 3 rotates beyond the first angle α ゜ and the proximity switch 12 is turned off, the tracking is continued, and the alarm stops when the main wheel 3 returns within α ゜. The angles are 20 ° for α, 12 ° for β, and 6 for γ
This is an example of ゜.

When the limiter of the main wheel 3 fails and the automatic leveler does not work, the main wheel 3 rotates beyond the range of the striker 3a, and the proximity switch
Since the range exceeds the range α 12, a warning is issued in response to the transmission of the warning signal. However, when the main wheel 3 further rotates and reaches the second angle δ (20 °), a sensor (not shown) operates to generate the forward drive signal. Activate the backup wheel 4 with the transmission. That is, the electric motor 5 for the backup wheel 4 is driven to move the backup wheel 4 forward. If the proximity switch 12 fails, the switch is turned off and the backup wheel 4 starts operating immediately.

When the boarding deck A contacts the boarding gate, the main wheel 3
Does not operate (for example, it is detected by the limit switch 14 being kept ON), that is, even in a trouble in which the vehicle does not move forward, the timer is set to a predetermined time, for example, three times.
The seconds are detected, and the backup wheel 4 is immediately advanced in response to the transmission of the forward drive signal, and the automatic leveler is operated instead of the main wheel 3.

In short, follow the vertical position of the boarding bridge is the main wheel 3
When the main wheel 3 is not operated, the backup wheel 4 is operated instead of the main wheel 3 to ensure safety. Even if the proximity switch 12 of the main wheel 3 is off, the boarding bridge continues to follow, but if the backup wheel 4 does not operate or an abnormal operation occurs, an alarm sounds and the following is stopped for safety. .

(Effects of the Invention) As described in detail above, the present invention detects the relative vertical movement of the tip of the boarding bridge with respect to the aircraft by pressing the foil provided at the tip of the boarding bridge against the outer surface of the fuselage. In an auto-leveler that performs vertical position correction corresponding to the movement amount, an alarm is issued when the rotation angle of the main wheel exceeds a predetermined first angle in a state where only the main wheel is pressed against the outer surface of the machine body, and an alarm is issued. When the rotation angle reaches the second angle larger than the first angle, the backup wheel is advanced by the driving means, so that the main wheel is broken due to the rotation angle of the main wheel reaching the second angle. The backup wheel is activated only in this case, so that both wheels will not detect the vertical movement. You. Further, by issuing an alarm when the rotation angle of the main wheel exceeds the first angle, the safety of the occupant can be sufficiently ensured. That is, it is possible to cope with a trouble that the boarding bridge cannot be followed because the wheel does not operate as in the related art, and the labor of manual operation can be reduced.

[Brief description of the drawings]

1 is a side view showing an embodiment of the present invention, FIG. 2 is a plan view thereof, FIG. 3 is a front view, and FIG. 4 is a view for explaining a rotating state of a wheel. 1 ... Auto leveler, 2 ... Base plate, 3 ... Main wheel, 4 ... Backup wheel, 5 ... Electric motor, 6,8 ...
... sprocket, 7 ... endless chain, 9 ... moving object, 10 ...
Compression spring, 11 …… Cylinder, 12,13 …… Proximity switch, 1
4,15,16… Limit switch, A… Boarding bridge floor.

Claims (1)

(57) [Claims] In order to make the boarding gate of the aircraft coincide with the boarding bridge floor, a wheel provided at the leading end of the boarding bridge is pressed against the outer surface of the fuselage to move the leading end of the boarding bridge relative to the aircraft in the vertical direction. In the auto-leveler which detects and corrects the upper and lower positions corresponding to the movement amount, the wheel includes a main wheel and a backup wheel, and each wheel moves forward and backward with respect to the outer surface of the body by a separate driving means. The main wheel only detects the rotation angle of the main wheel in a state in which only the main wheel is in the forward position and pressed against the outer surface of the fuselage, and the rotation angle of the main wheel is a predetermined first angle. When the rotation angle exceeds a second angle larger than the first angle, a backup signal is issued. Boarding bridges auto leveler, characterized in that by advancing the drive means includes angle detection means for transmitting a forward drive signal for pressing the body outer surface.