JP7134061B2 - boarding bridge - Google Patents

Description

The present invention relates to a boarding bridge that connects a building such as a terminal building and a ship or an aircraft.

2. Description of the Related Art Conventionally, there is known a boarding bridge that bridges a boarding gate of a terminal building and a doorway of a ship or an aircraft to form a passage connecting them. Patent Literature 1 discloses a technology related to this type of boarding bridge.

The boarding bridge described in Patent Literature 1 includes a connecting body that can be raised and lowered, a tunnel that is supported by the connecting body so that it can be raised, and an elevation device that raises the tunnel. The elevation device comprises an electric or hydraulic cylinder supported by a liaison and a rod connected to the tunnel and extending back and forth from the cylinder.

JP 2017-120012 A

FIG. 6 is a configuration diagram of a conventional boarding bridge 100 of the type shown in Patent Document 1. As shown in FIG. A boarding bridge 100 shown in FIG. 6 includes a tower frame 7, a box-shaped elevating passage body 3 (first passage body) supported by the tower frame 7 so as to be able to ascend and descend, and connected to the elevating passage body 3 so as to be able to rise. It has a tunnel-shaped elevation passage body 2 (second passage body) and a direct-acting actuator 50 for raising the elevation passage body 2 . The linear motion actuator 50 spans between the frame 6 fixed to the lower part of the elevator passage body 3 and the lower part of the elevation passage body 2 . As the rod 51 of the linear motion actuator 50 expands and contracts, the elevation passage body 2 is elevated.

The boarding bridge 100 configured as described above has a structure in which the elevation passage body 2 and the elevator passage body 3 are cantilevered on the tower frame 7 . Therefore, the horizontal fulcrum reaction force R generated in the tower frame 7 increases in proportion to the length and weight of the elevation passage body 2, and the tower frame 7 is required to have high rigidity accordingly. The tower frame 7 having high rigidity is increased in size and cost.

The present invention has been made in view of the above circumstances, and its object is to provide a tower frame, a first passage body supported by the tower frame so as to be able to ascend and descend, and a second passage body connected to the first passage body. To reduce the horizontal fulcrum reaction force of a first passage body and a second passage body generated in a tower frame in a boarding bridge comprising:

A boarding bridge according to one aspect of the present invention includes:
a tower frame having a column member extending in a vertical direction and a lifting beam that moves up and down with respect to the column member;
a first passage body that ascends and descends along the column member;
a second passage body connected to the first passage body;
a pillar connected to the elevating beam; a first sliding part and a second sliding part provided on the pillar and sliding on the pillar in the vertical direction; an elevating frame having a passage body supporting portion that supports the passage body, and a tension support portion that bridges between a lower portion of the column portion and the second passage body;
The first sliding portion is above the first passage body, and the second sliding portion is below the first passage body.

According to the present invention, in a boarding bridge including a tower frame, a first passage body supported by the tower frame so as to be able to ascend and descend, and a second passage body connected to the first passage body, The horizontal fulcrum reaction force of the first passage body and the second passage body can be reduced.

FIG. 1 is a diagram showing a schematic configuration of a boarding bridge according to a first embodiment of the present invention. FIG. 2 is a structural drawing of the boarding bridge according to the first embodiment of the present invention. FIG. 3 is a structural diagram of a boarding bridge according to a second embodiment of the present invention. FIG. 4 is a structural diagram of a boarding bridge according to a third embodiment of the present invention. FIG. 5 is a structural diagram of a boarding bridge according to a modification of the third embodiment of the present invention. FIG. 6 is a structural diagram of a conventional boarding bridge.

[First embodiment]
The first embodiment of the present invention will be described. FIG. 1 is a diagram showing a schematic configuration of a boarding bridge 1A according to the first embodiment of the present invention, and FIG. 2 is a structural diagram of the boarding bridge 1A according to the first embodiment of the present invention. The boarding bridge 1A shown in FIGS. 1 and 2 includes a tower frame 7, an elevating frame 8 supported by the tower frame 7 so as to be able to ascend and descend, and an elevating passage body 3 (first passage body) supported by the elevating frame 8. , and an elevation passage body 2 (second passage body) connected to the elevation passage body 3 so as to be able to be elevated.

The tower frame 7 has at least one column member 71 extending vertically upward. The tower frame 7 according to this embodiment has two pillar members 71 arranged in the depth direction of the paper surface of FIG. A lifting beam 72 spans over the two pillar members 71 .

The elevating frame 8 is suspended from the elevating beam 72 . The elevating beam 72 is driven up and down along the column member 71 by the elevating device 4 . As the elevating beam 72 moves up and down, the elevating frame 8 moves up and down.

The lifting device 4 includes, for example, a screw shaft provided along the column member 71 of the tower frame 7 or inside the column member 71, a ball nut coupled to the lifting beam 72, and a screw shaft or ball nut. It is composed of an electric motor that rotates (not shown). However, the configuration of the lifting device 4 is not limited to this embodiment as long as the lifting beam 72 can be moved up and down. For example, the lifting device 4 may utilize at least one of a wire cable and an electric winch for winding it up, an electric or hydraulic jack, and a rack and pinion mechanism.

Running wheels are provided on the lower part of the tower frame 7 . However, the tower frame 7 may be fixed to the ground without running wheels.

The elevator passage body 3 has a box shape. The elevation passage body 2 has a tunnel shape. The elevation passage body 2 is composed of an inner cylinder and an outer cylinder, and may extend and contract telescopically. One end in the longitudinal direction of the elevation passage body 2 is connected to the first side of the elevation passage body 3 (the right side of the paper surface of FIGS. 1 and 2). The other end in the longitudinal direction of the elevation passage body 2 may be connected to another passage body, or may be connected to a boarding gate of a terminal building or a doorway of a ship or an aircraft via a flap. Similarly, the elevator passage body 3 may be connected to another passage body, or may be connected to a boarding gate of a terminal building or a doorway of a ship or an aircraft via a flap.

Lower parts of the elevation passage body 2 and the elevation passage body 3 are connected to each other, and the floor of the elevation passage body 2 and the floor of the elevation passage body 3 are communicated with each other. A connecting portion between the elevation passage body 2 and the elevation passage body 3 serves as a rotation fulcrum S4. The elevation passage body 2 is elevated (that is, swings in the vertical direction) about the rotation fulcrum S4.

The elevating frame 8 has a passage body support portion 81 , a column portion 82 and a tension support portion 86 . The passage body support portion 81 and the column portion 82 are integrally connected. The passage body support portion 81 is coupled to the passage body support portion 81 to support the ascending/descending passage body 3 . The column portion 82 is an elongated member extending in the vertical direction. In other words, the elevator passage body 3 is located between the upper end level and the lower end level of the column portion 82 .

A first sliding portion 83 is provided at the upper end of the column portion 82 . In this embodiment, the first sliding portion 83 sandwiches the column member 71 of the tower frame 7 from the first side and the opposite side, and the first sliding portion 83 slides the first side and the opposite side of the column member 71 . including. The first sliding portion 83 is in contact with the pillar member 71 and is constrained from moving horizontally with respect to the pillar member 71 , but can move vertically along the pillar member 71 . An upper movable fulcrum S1 of the lifting frame 8 is formed on the tower frame 7 by the first sliding portion 83 and the column member 71 as described above.

A second sliding portion 84 is provided at the lower end of the column portion 82 . In this embodiment, the second sliding portion 84 sandwiches the column member 71 of the tower frame 7 from the first side and the opposite side, and includes rollers that slide the first side of the column member 71 . The second sliding portion 84 is in contact with the pillar member 71 and is constrained from moving horizontally with respect to the pillar member 71 , but can move vertically along the pillar member 71 . A lower movable fulcrum S2 of the lifting frame 8 is formed on the tower frame 7 by the second sliding portion 84 and the column member 71 as described above.

The tension support part 86 is bridged between the lower part of the column part 82 and the lower part of the elevation passage body 2, and supports the elevation passage body 2 in a manner of being braced. One end of the thrust support portion 86 is rotatably connected to the lower portion of the column portion 82 , and the other end of the thrust support portion 86 is rotatably connected to the lower portion of the elevation passage body 2 .

The tension support 86 includes a linear actuator 50 . The linear actuator 50 has a rod 51 that extends and contracts. Linear actuator 50 may be at least one of an electric cylinder, a hydraulic cylinder, and an air cylinder. When the linear motion actuator 50 operates and the rod 51 expands and contracts, the elevation passage body 2 rotates vertically around the rotation fulcrum S4.

As described above, the boarding bridge 1A includes a tower frame 7 having a vertically extending pillar member 71, an elevating beam 72 that moves up and down relative to the pillar member 71, and an elevating passage body that moves up and down along the pillar member 71. 3 (first passage body), an elevation passage body 2 (second passage body) connected to the elevating passage body 3, a column portion 82 connected to the elevating beam 72, and a column member 71 provided in the column portion 82 A first sliding portion 83 and a second sliding portion 84 that slide on the top in the vertical direction, a passage body support portion 81 that is coupled to the column portion 82 to support the ascending/descending passage body 3, and a lower portion of the column portion 82. A lift frame 8 having a tension support portion 86 bridged between the elevation passage body 2 is provided. Here, the first sliding portion 83 is above the elevator passage body 3 and the second sliding portion 84 is below the elevator passage body 3 .

In the boarding bridge 1A, the elevation passage body 2 (second passage body) is connected to the elevation passage body 3 (first passage body) so that it can be elevated, and the tension support portion 86 has an extendable rod 51. A linear actuator 50 is included.

In the boarding bridge 1A configured as described above, H represents the vertical distance between the upper movable fulcrum S1 and the lower movable fulcrum S2. The weight of the elevation passage body 2 is denoted by W1, and the weight of the elevation passage body 3 is denoted by W2. L is the horizontal distance from the center of gravity G1 of the elevation passage body 2 to the upper movable fulcrum S1 (or the lower movable fulcrum S2). In the passenger boarding bridge 1A having the above configuration, the following formula 1 is established to obtain the fulcrum reaction force R of the upper movable fulcrum S1 and the lower movable fulcrum S2.

Since the first sliding portion 83 is above the elevator passage body 3 and the second sliding portion 84 is below the elevator passage body 3 , H is larger than the vertical dimension of the elevator passage body 3 . As a result, the fulcrum reaction force R can be reduced compared to the example shown in FIG. If the fulcrum reaction force R is reduced, it becomes possible to refrain from increasing the strength and size of the tower frame 7, which can contribute to cost reduction. Moreover, it becomes possible to equip the boarding bridge 1A with the long and heavy elevation passage body 2. - 特許庁

The maximum value of H is a value obtained by subtracting the elevation dimension of the elevation passage body 3 from the longitudinal dimension of the column member 71 of the tower frame 7 . The larger H is, the smaller the fulcrum reaction force R becomes. From this point of view, H is preferably about 1.5 to 3.0 times the vertical dimension of the elevator passage body 3 .

[Second embodiment]
Next, a second embodiment of the invention will be described. In the description of this embodiment, the same or similar members as those of the first embodiment described above are denoted by the same reference numerals in the drawings, and the description thereof is omitted.

FIG. 3 is a structural diagram of a boarding bridge 1B according to the second embodiment of the present invention. Although the tower frame 7 and the lifting device 4 are omitted in FIG. 3, the boarding bridge 1B is provided with the tower frame 7 and the lifting device 4 similarly to the boarding bridge 1A according to the first embodiment.

In the boarding bridge 1A according to the first embodiment described above, the center of gravity G2 of the elevator passage body 3 and the center of gravity G2 of the elevator passage body 2 are located on the first side (the right side of the paper surface of FIG. 2) relative to the column portion 82 of the elevator frame 8. be. On the other hand, in the boarding bridge 1B according to the second embodiment, the center of gravity G1 of the elevation passage body 2 (second passage body) is on the first side (the right side of the paper surface of FIG. 3) relative to the column portion 82 of the elevating frame 8. , the center of gravity G2 of the ascending/descending passage body 3 (first passage body) is located on the side opposite to the first side (the left side of the paper surface of FIG. 3) via the column portion 82 . The thrust support portion 86 is provided on the first side with respect to the column portion 82 .

In the above-configured boarding bridge 1B, L1 is the horizontal distance from the column 82 to the center of gravity G1 of the elevator passage body 2, L2 is the horizontal distance from the column 82 to the center of gravity G2 of the elevator passage 3, and L2 is the elevator passage. Assuming that the weight of the body 2 is W1, the weight of the elevator passage body 3 is W2, and the vertical distance between the upper movable fulcrum S1 and the lower movable fulcrum S2 is H, the fulcrum reaction force R of the upper movable fulcrum S1 and the lower movable fulcrum S2 is R. is represented by the following equation (2).

In the boarding bridge 1B, the center of gravity G1 of the elevator passage body 2 is located on the first side of the pillar 82, and the center of gravity G2 of the elevator passage 3 is located on the opposite side of the pillar 82 from the first side. The fulcrum reaction force R can be reduced compared to the case where the centers of gravity G1 and G2 of the elevation passage body 2 and the elevation passage body 3 are on the first side of 82 (for example, the example shown in FIG. 2). In addition, the length of the tension support portion 86 can be shortened.

Assuming that the horizontal distance from the rotation fulcrum S4 of the elevation passage body 2 to the center of gravity G1 of the elevation passage body 2 is B, and the distance from the rotation fulcrum S4 to the tension support portion 86 is A, the thrust force F of the linear actuator 50 is: , is expressed by the following equation (3).

In the boarding bridge 1B, the rotational moment of the elevator passage body 3 is small compared to the case where the center of gravity of the elevator passage body 2 and the elevator passage body 3 is on the first side of the column portion 82 (for example, the example shown in FIG. 2). Become. Therefore, the thrust force F of the linear motion actuator 50 can be reduced. As a result, an electric cylinder having a smaller thrust force than a hydraulic cylinder can be used as the direct acting actuator 50 .

[Third embodiment]
Next, a third embodiment of the invention will be described. In the description of this embodiment, the same or similar members as those of the first and second embodiments described above are denoted by the same reference numerals in the drawings, and the description thereof is omitted.

FIG. 4 is a structural diagram of a boarding bridge 1C according to the third embodiment of the present invention. Although the tower frame 7 and the lifting device 4 are omitted in FIG. 4, the boarding bridge 1C is provided with the tower frame 7 and the lifting device 4 similarly to the boarding bridge 1A according to the first embodiment.

In the boarding bridge 1C according to the third embodiment, the lift frame 8 further has a tension support portion 85 in the boarding bridges 1A and 1B according to the first and second embodiments. The tension support part 85 is bridged between the upper part of the column part 82 of the lifting frame 8 and the elevation passage body 2 to support the elevation passage body 2 in tension. One end of the tension support portion 85 is rotatably connected to the upper portion of the column portion 82 to form a rotation fulcrum S5. The other end of the tension support portion 85 is connected to the elevation passage body 2 so as to be slidable and rotatable along the longitudinal direction of the elevation passage body 2 to form a movable fulcrum S7.

In the above boarding bridge 1C, the weight of the elevator passage body 2 is W1, the distance between the rotating fulcrum S5 and the movable fulcrum S7 is D, the load on the movable fulcrum S7 is T, and the horizontal direction between the rotating fulcrum S5 and the movable fulcrum S7 is , B is the horizontal distance from the rotational fulcrum S4 to the center of gravity G1 of the elevation passage body 2, and K is the horizontal distance between the rotational fulcrum S4 and the movable fulcrum S7. ) and (2) hold, and equations (1) and (2) are simultaneously solved, the thrust force F of the direct acting actuator 50 of the elevation device 5 is expressed by equation (3) shown in equation (4).

In the boarding bridge 1C, by providing the tension support portion 85, the thrust force F can be reduced compared to the boarding bridges 1A and 1B according to the first and second embodiments. This makes it possible to employ a linear motion actuator 50 with a smaller thrust force.

Although the tensile support portion 85 shown in FIG. 4 has a linear shape, the tensile support portion 85' may have a triangular shape as shown in FIG. In boarding bridge 1C' according to the modification of the third embodiment shown in FIG. It is rotatably connected to the rod 51 (rotational fulcrum S6), and is slidably and rotatably connected to the elevation passage body 2 along its longitudinal direction (movable fulcrum S7).

By providing such a tension support portion 85', the length of the tension support portion 86 can be shortened compared to the boarding bridges 1A, 1B, and 1C according to the first to third embodiments. Thereby, the rod 51 of the linear motion actuator 50 included in the tension support portion 86 can be shortened, and the linear motion actuator 50 can be miniaturized.

Although the preferred embodiments (and modifications) of the present invention have been described above, details of the specific structures and/or functions of the above embodiments may be changed without departing from the spirit of the present invention. can be included in the present invention.

For example, in the boarding bridges 1A, 1B, and 1C according to the first to third embodiments, the passage body connected to the elevation passage body 3 is the elevation passage body 2, but instead of the elevation passage body 2, a tunnel-shaped structure that does not rise passage body. In this case, the stretching function (linear actuator 50) is omitted from the tension support portion 86. FIG. In a boarding bridge in which a non-elevating passage body (second passage body) is connected to the elevator passage body 3 in this way, the thrust force F of the above-described linear motion actuator 50 is applied to the connection between the column portion 82 and the thrust support portion 86. The effect can be explained by replacing it with the load applied to the part (or the fulcrum reaction force).

1A, 1B, 1C: Boarding bridge 2: Elevation passage body (second passage body)
3: Elevating passage body (first passage body)
4: Elevating device 5: Elevating device 6: Frame 7: Tower frame 8: Elevating frame 50: Linear actuator 51: Rod 71: Column member 72: Elevating beam 81: Passage support portion 82: Column portion 83: First slide Moving part 84 : Second sliding part 85 : Tension support part 86 : Tension support part

Claims (5)

a tower frame having a column member extending in a vertical direction and a lifting beam that moves up and down with respect to the column member;
a first passage body that ascends and descends along the column member;
a second passage body connected to the first passage body;
a pillar connected to the elevating beam; a first sliding part and a second sliding part provided on the pillar and sliding on the pillar in the vertical direction; an elevating frame having a passage body supporting portion that supports the passage body, and a tension support portion that bridges between a lower portion of the column portion and the second passage body;
The first sliding portion is above the first passage body, and the second sliding portion is below the first passage body,
boarding bridge. The second passage body is connected to the first side of the first passage body, the center of gravity of the second passage body is on the first side of the column, and the first passage is via the column. the center of gravity of the first passage body is horizontally opposite to the side of the
A boarding bridge according to claim 1. The elevating frame further includes a tension support section spanning between the upper portion of the pillar and the second passage body,
The boarding bridge according to claim 1 or 2. The tension support part is rotatably connected to the upper part of the column part, and is connected to the second passage body so as to be slidable and rotatable along the longitudinal direction of the second passage body,
A boarding bridge according to claim 3. The second passage body is connected to the first passage body so that it can be raised,
wherein the tension support includes a linear actuator having a telescopic rod;
A boarding bridge according to any one of claims 1 to 4.

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