JPS61275098A - Auto-leveller for aircraft passenger boarding bridge - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an autoleveller for a boarding bridge used for boarding and disembarking passengers from an aircraft.

[Prior Art] Conventionally, passenger boarding bridges have been configured to be able to extend and contract, turn, and move up and down in accordance with the type of aircraft, the direction in which the aircraft is parked, and the like. However, a level difference occurs between the head floor surface at the tip of the boarding bridge and the boarding gate of the aircraft as the aircraft moves up and down due to an increase or decrease in the loaded load. For this purpose, an auto-leveler with a detection foil is installed at the tip of the head floor surface, and this detection foil has a built-in means for detecting the rotation angle, and the detection foil is pressed against the side of the aircraft with an appropriate pressing force. Press. In this way, the detection wheel is rotated to follow the elevation of the aircraft, and the level difference is detected from the rotation angle, and the boarding bridge is raised and lowered based on this detection signal, and the head floor and the aircraft boarding gate are connected. I am trying to correct the difference in level. In this case, in order to accurately align the head floor surface with the boarding gate of the aircraft body, it is necessary to apply an appropriate pressing force to the detection foil to smoothly rotate the side surface of the aircraft body.

Examples of this autoleveler are disclosed in Japanese Utility Model Application Publication No. 58-115500 and Japanese Patent Publication No. 59-3320. In the former, a detection foil is attached to one end of a support arm that is swingable in the shape of a balance on a shaft that rotates forward and backward, and a spring is attached to the other end of the support arm that biases the detection foil toward the aircraft body. is attached, and this spring presses the detection foil against the aircraft body. In the latter, the detection foil is attached to a shock absorber that can be moved forward and backward by an electric motor, and a spring is provided inside the shock absorber to press the detection foil, and the shock absorber is advanced to a predetermined position by the electric motor. , the detection foil is pressed against the aircraft body by a spring.

[Problem to be solved by the invention] By the way, the sides of the aircraft body are generally curved, so
When the onboard load increases or decreases and the aircraft moves up or down, the distance between the head floor and the aircraft changes. In the former case, the spring that presses the detection foil expands and contracts in response to changes in distance, and the pressing force increases and decreases due to this expansion and contraction. Also, when used for a long period of time, the spring constant changes due to aging. For this reason, the strength of the frictional force between the detection wheel and the aircraft body varies, resulting in a drawback that the detection wheel cannot rotate smoothly. In addition, in the latter case, when the distance to the aircraft changes, the shock absorber can be moved forward or backward using an electric motor to adjust the spring force to maintain an appropriate constant value, but the structure and operation are complicated and maintenance is required. There was also a problem that it was time consuming.

The present invention has been made to solve the above-mentioned drawbacks.
To provide an autoleveler which always applies a constant pressing force with a simple structure and smoothly rotates a detection foil by using a weight as a means for pressing the detection foil.

[Means for Solving the Problems] One aspect of the present invention is to provide a detection boiler with built-in rotation angle detection means at the tip of the rod, and to slidably attach the rod to a guide jig. , one end of an arm having a predetermined intersecting angle is engaged with the rod, and a weight is attached to the other end of the arm.

Another aspect of the present invention is to provide a detection foil with built-in rotation angle detection means at the tip of the rod, to attach the rod to a guide jig so that it can slide freely, and to attach the detection foil to the rear end of the rod. One end of the towing cable is tied down, the other end is guided downward by a pulley, and a weight is suspended from the towing cable guided downward.

[Function] In the first invention, when the autoleveler is not used, the repulsive force due to the pressure of the aircraft body does not act on the detection foil, so the detection foil and rod are pushed to the foremost position by the gravity of the weight. The weight is located at the lowest position. When an autoleveller is used, the sensing foil and rod are pushed back a predetermined stroke by the machine, and the rod then rotates the arm and lifts the weight to a predetermined height. At this time, the detection foil is pressed against the aircraft body by the gravity acting on the weight.

In the second invention, when the auto-leveler is not used, the repulsive force due to the pressure of the aircraft does not act on the detection foil, so the detection foil and rod are pushed to the foremost position by the gravity of the weight, and The weight is located at the lowest position. If an autoleveler is used, the sensing foil and rod are pushed back a predetermined stroke by the fuselage, so that the rod pulls the towline and the weight is hoisted to a predetermined height. At this time, the detection foil is pressed against the aircraft body by the gravity acting on the weight.

[Example] Embodiments of the present invention will be described based on the drawings.

Figures 1 and 2 are a front view and a plan view of the passenger boarding bridge 1 attached to the fuselage.

In the figure, 2 is a rotunda, which is placed on a rotunda support 3, and is capable of turning in 90# directions to the left and right, respectively, with respect to the fixed bridge 4.

5.6 is an A tunnel and a B tunnel, and the A tunnel 5 is telescopically inserted into the B tunnel, and the end on the A tunnel 5 side is connected to the rotunda 2 by the hinge 7, and the B tunnel 6 side is connected to the rotunda 2 by the hinge 7. is supported by a drive column 8 that is equipped with forward and backward movement, elevation, and rotation mechanisms.

B) A head 9 is attached to the distal end side of the B tunnel 6, and this head 9 can be turned in the left and right directions of 75 degrees with respect to the B tunnel 6. This head 9 is the boarding gate 1 of the aircraft 10.
A head floor 12 with a bumper 13 attached is laid on the floor in contact with the board 1, and a hood 12 is installed to cover the boarding gate 11.
4 is installed.

Reference numeral 15 denotes an autoleveler, which is attached to the tip of the head bed 12. This autoleveler will be explained below.

FIG. 3 is a front view of the autoleveler 21 of the embodiment of the first invention, and FIG. 4 is a, a'
FIG. 22 is a prismatic rod, 2
3 is a guide jig. The guide jig 23 has a base 24 and a side plate 2.
5 are opposed to each other, and guide wheels 26 are arranged in a quadrilateral shape inside the rods 22 and 22.
is held horizontally and slidably, and a detection foil 27 is pivotally attached to the tip of the rod 22. A rubber tire 28 is attached around the circumference of the detection wheel 27, and a rotation angle detection means, which will be described later, is built into the wheel. 29
29a and 29b are arms connected at a predetermined intersecting angle, for example 90°, and are pivoted to the base 24 at a pivoting portion 30 at the intersection. The end of the arm 29m is rotatably engaged, and the arm 29b extending laterally has a weight 3.
3 is attached so that its position can be adjusted.

FIG. 5 is a front view of the autoleveler according to the second embodiment of the invention, and FIG. 6 is a sectional view of the main parts as seen from b and b'. 42
is a prismatic rod, and 43 is a guide jig. Guide jig 43
has two side plates 44 and 45 facing each other, and guide wheels 46 are arranged in a quadrilateral shape on the inside thereof, and the rod 42 is held horizontally and slidably by the guide wheels 46,
Furthermore, a detection foil 47 is pivotally attached to the tip of the rod 42 . The detection foil 47 has the same structure as the detection foil 27, a rubber tire 48 is attached around the circumference, and a rotation angle detection means, which will be described later, is built into the foil. Reference numeral 49 denotes a towing cable, one end of which is tied tightly to the rear end of the rod 42, stretched along a guide groove 50 drilled in the bottom of the rod 42, and further attached to the distal end side of the guide jig 43. A weight 53 is suspended and guided downward by a pulley 51.

FIG. 7 is a diagram showing an example of a rotation angle detection means built in the detection wheel 27.47. Limit shoes 63a and 63b are mounted concentrically with the foil 61 and at positions where the limit switch 62 operates, symmetrically spaced apart from the neutral position 62a of the limit switch 62 fixed to the rod 22.42. ing. 64 is an emergency limit switch, and the installation interval is 1b.
is larger than the above-mentioned 1a, and the limit shoes 65a, 6
5b is installed. Reference numeral 66 denotes a spring for maintaining the foil 61 in a neutral position under normal conditions. If the onboard negative blue increases and the aircraft 10 sinks downward,
The wheel 61 pressed against the body 10 rotates in the direction of the arrow 67a, and the limit switch 62 is activated by the limit shoe 63m. Based on this activation signal, the elevating mechanism of the drive column 8 is activated so that the head 9 shown in FIG. 1 is lowered, and the wheel 61 is returned to the neutral position. Similarly, when the onboard load is reduced, the aircraft 10 rises, so the wheel 61 rotates in the direction of the arrow 67b and the limit shoe 63
b, the limit switch 62 is operated in the opposite direction to that described above, the elevating mechanism of the drive column 8 is operated to raise the head 9, and the wheel 61 is returned to the neutral position. The emergency limit switch 64 is provided for emergency use when the limit switch 62 does not operate normally due to a failure or the like, and has the same function as the limit switch 62.

The structure is as described above, and its operation will be explained. In FIG. 3, the detection foil 27 and rod 22 of the autoleveler 21 move between the stroke L1 from the most extreme position 27a to the most extreme position 27b. At the same time, arm 2 follows the rod 22.
9m and 29b, the weight 33 moves up and down between 33a and 33b, and due to its gravity, the detection foil 27
Press. In use, the body 10 is placed in a position where it slightly presses the bumper 13 attached to the head floor 12, and the detection foil 27 is moved by the body 10 to the bumper 13 attached to the head floor 12.
It is pushed back to 27c, which is approximately halfway between 27b and 27b.

In this case, the weight 33 is 33 such that the arm 29b is almost horizontal.
Located at e. In this way, the distance between the head floor 12 and the machine body 10 changes as the machine body 10 moves up and down, and the detection foil 2
Even if the weight 7 moves back and forth, the force acting on the rod 22 from the weight 33 does not change.

Therefore, the detection foil 27 always presses the body with the same pressing force.

Next, in FIG. 5, the detection foil 47 of the auto-leveler 41 and the rod 42 are moved between the most extreme position 47m and the most extreme position +7b, which is the stroke L2, and at the same time are tightly bound to the rod 42. tow rope 4
9, the weight 53 moves up and down between 53m and 53b and presses the detection foil 47 by its gravity. In use, the body 10 is placed in a position where it slightly presses the bumper 13 attached to the head floor 12, and the detection foil 47 is pushed back by the body 10 to a position 47c approximately midway between the 47m and 47b. In this case, the weight 53 is pulled up to the position 53e. In this way, even if the distance between the head floor 12 and the machine body 10 changes as the machine body 10 moves up and down, and the detection foil 47 moves back and forth, the weight 5
The force acting on the rod 42 from 3 does not change, so the detection foil 47 always presses the body 10 with the same pressing force.

[Effects of the Invention] As explained above, the present invention applies a pressing force to the detection foil attached to the rod by the gravity of a weight attached to a rotating arm or by the gravity of a weight suspended from a towing cable. As a result, even if the distance between the head floor of the passenger boarding bridge and the aircraft body changes and the detection foil moves forward or backward, the detection foil can still press the aircraft with the same pressing force due to the weight. The weight on the arm can be moved and the weight can be easily adjusted to give the optimum pressing force to the detection foil, so the detection foil can be rotated smoothly on the side of the machine and aligned with the head floor. It is possible to accurately correct the difference in level from the boarding gate. Furthermore, since the structure is simple, operation and maintenance are not required.

[Brief explanation of the drawing]

FIG. 1 is a front view of the passenger boarding bridge, FIG. 2 is a plan view of FIG. 1, FIG. 3 is a front view of an embodiment of the autoleveler according to the first invention, and FIG. Fig. 5 is a front view of the embodiment of the autoleveler according to the second invention, Fig. 6 is a side view of b b' part of Fig. It is a drawing showing an example of a rotation angle detection means. 15.21.41...Auto leveler, 22.42.
... Rod, 23.43 ... Guide jig, 27.47.
...Detection foil, 29a, 29b...Arm, 33
．． 53... Weight, 49... Traction cable, 51... Pulley Figure 3 Figure 4 Figure 7

Claims (2)

[Claims] (1) A detection foil with built-in rotation angle detection means is provided at the tip of the rod, the rod is slidably mounted on a guide jig, and one end of an arm having a predetermined intersecting angle is engaged with the rod. An auto-leveler for an aircraft passenger boarding bridge, which has a weight attached to the other end of the arm. (2) A detection foil with built-in rotation angle detection means is provided at the tip of the rod, the rod is slidably attached to a guide jig, and one end of the towing cable is tied to the rear end of the rod. At the same time, the other end is guided downward by a pulley, and a vertical plumb is suspended from the guided tow cable.