JP7263079B2 - boarding bridge - Google Patents

Description

The present invention relates to boarding bridges.

A boarding bridge is, for example, a tunnel-like passageway connecting an airport or wharf terminal building with an aircraft or vessel, allowing passengers to board and disembark directly between the terminal building and the aircraft or vessel. The boarding bridge comprises a plurality of telescoping tunnels (passages) which expand and contract as they move relative to each other in the longitudinal direction. This accommodates different spacings that occur between the terminal building and the aircraft or vessel.

The boarding bridge has movable legs (mover) that support the tunnel section. The movable leg has a running section on which wheels are installed and an elevating section for elevating the tunnel section. Moreover, the boarding bridge is provided with a rotunda that supports the tunnel section so as to be rotatable in the horizontal and vertical directions on the terminal building side. Patent Document 1 below discloses an invention relating to a rotunda for a boarding bridge for installing a plurality of tunnel sections.

JP 2014-166778 A

In the traveling portion of the boarding bridge, there are cases where a set of two wheels is installed at the center in the width direction. The traveling portion includes a connecting member for connecting two wheels and a supporting member vertically installed in the center of the connecting member, and the supporting member is connected to the connecting member by a pin. There is only one pin joint, and the tunnel part supported above the running part is maintained horizontally with left and right sides in the width direction balanced (Yajirobee structure). That is, even if the road surface on which the wheels of the running portion are in contact with the ground is slanted, the pin coupling portion absorbs the slanting, so that torsional torque is less likely to be applied to the tunnel portion.

On the other hand, in the running section of the boarding bridge, there are cases where one set of wheels is installed on each of the left end side and the right end side. One set may have one wheel or two wheels. In a boarding bridge with two pairs of wheels installed, one on each side, the height position of the left pair differs from the height of the right pair when the road surface is sloping or uneven. , the entire movable leg inclines in the width direction. Therefore, the tunnel portion connected to the movable leg is also inclined in the width direction at the portion connected to the movable leg. In the conventional boarding bridge, since the tunnel portion is restrained with respect to the rotunda at the supporting portion (rotunda pin) that connects the rotunda and the tunnel portion, torsional torque is applied to the tunnel portion. As a result, a large load is generated on the rollers that support both the distal end tunnel and the proximal end tunnel, and the rotunda pin that connects the tunnel portion and the rotunda.

In order to prevent damage to the rollers and rotunda pins when torsional torque is generated, it is necessary to increase the strength of the tunnel portion and the strength of the rotunda, resulting in increased weight and material costs.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a boarding bridge capable of suppressing the generation of torsional torque in a tunnel portion and reducing the load applied to the tunnel portion. do.

In order to solve the above problems, the boarding bridge of the present invention employs the following means.
That is, a boarding bridge according to the present invention includes a tunnel portion and a rotunda portion that supports the base end side of the tunnel portion, and is installed in the tunnel portion and has a first boss portion in which a first through hole is formed. , a second boss portion installed in the rotunda portion and having a second through hole formed thereon; and a rod-shaped pin portion inserted through the first through hole and the second through hole; The hole or the second through-hole, or the first boss portion or the second boss portion has a configuration in which the pin portion can move along a vertical direction perpendicular to the horizontal direction, and the first The boss portion and the second boss portion are provided at the width direction end portion of the tunnel portion or at the outside of the width direction end portion and at the center side of the width direction end portion side of the tunnel portion. A plurality of each are installed on the left side and the right side so as to form a pair centering on the center in the width direction .

According to this configuration, the rotunda portion supports the base end side of the tunnel portion, the tunnel portion is provided with the first boss portion in which the first through hole is formed, and the rotunda portion is provided with the second through hole. A second boss portion having a hole is provided. The rod-shaped pin portion is inserted through the first through hole and the second through hole, and the pin portion of the first through hole or the second through hole, or the first boss portion or the second boss portion It has a configuration that allows it to move along a vertical vertical direction. Thereby, when the tunnel portion is inclined in the width direction, the pin portion can move in the vertical direction. As a result, the torsional torque applied to the tunnel portion does not exceed a certain value, and a large load is not applied to the connecting portion between the rotunda portion and the tunnel portion.
Further, according to this configuration, unlike the case where the first boss portion and the second boss portion are provided only on the central side of the width direction end portions of the tunnel portion, when a large load such as a typhoon is applied, The load can be borne by the first boss portion and the second boss portion which are installed on the width direction end portion side of the tunnel portion or outside the width direction end portion. Thereby, the maximum load input to the first boss portion and the second boss portion can be reduced to a predetermined value or less.

In the above invention, the first through-hole or the second through-hole may be elongated in a vertical direction perpendicular to the horizontal direction.

According to this configuration, the first through-hole or the second through-hole has an elongated oval shape along the vertical direction perpendicular to the horizontal direction. Thereby, when the tunnel portion is inclined in the width direction, the pin portion can move in the vertical direction along the oval first through hole or the second through hole.

In the above invention, the first boss portion may be slidable relative to the main body of the tunnel portion, or the second boss portion may be slidable relative to the main body of the rotunda portion along rails.

According to this configuration, the first boss portion can slide along the rail relative to the main body of the tunnel portion, or the second boss portion can slide relative to the main body of the rotunda portion. Thereby, when the tunnel portion is inclined in the width direction, the pin portion can move in the vertical direction.

In the above invention, the first boss portion and the second boss portion may be arranged closer to the center than the end portions in the width direction of the tunnel portion.

According to this configuration, the pin moves in the vertical direction along the first through hole or the second through hole even when a smaller torsional torque is applied than when it is installed at the width direction end of the tunnel part. It is possible. Compared to the case where the pin portion does not move until a large torsional torque is applied, the load applied to each part of the tunnel portion (for example, the rollers supporting the tunnel portions and the connection portion between the rotunda portion and the tunnel portion) can be reduced.

In the above invention, a floor plate portion installed over both the floor surface of the tunnel portion and the floor surface of the rotunda portion is provided, and the floor plate portion is configured to absorb a step occurring between the tunnel portion and the rotunda portion may have

According to this configuration, the floor plate portion is installed over both the floor surface of the tunnel portion and the floor surface of the rotunda portion, and the floor plate portion can absorb a step occurring between the tunnel portion and the rotunda portion.

In the above invention, the first boss portion or the second boss portion may be provided with an impact absorbing portion configured to reduce an impact load generated on the pin portion.

According to this configuration, the first boss portion or the second boss portion is provided with the impact absorbing portion, and the impact load generated on the pin portion can be reduced. The impact absorbing portion is, for example, an elastic body such as rubber or a spring installed inside or outside the first through hole or the second through hole. Alternatively, the impact absorbing portion may have a configuration in which the first boss portion or the second boss portion is movable, and the impact absorbing portion may be such that the main body of the first boss portion or the main body of the second boss portion is made from an elastic body. may be configured by becoming

In the above invention, a movable leg may be provided to support the tunnel section on the tip side of the tunnel section, and the movable leg may have four or two wheels.

According to this configuration, both the boarding bridge in which the tunnel section is supported by the movable legs having four wheels and the tunnel section in which the movable legs having two wheels support the above-mentioned The configuration of the first boss portion and the second boss portion may be applied.

According to the present invention, it is possible to suppress the generation of torsional torque in the tunnel portion and reduce the load applied to the tunnel portion.

1 is a longitudinal sectional view showing a boarding bridge according to a first embodiment of the present invention, showing a state in which the boarding bridge is extended; FIG. 1 is a longitudinal sectional view showing a boarding bridge according to a first embodiment of the present invention, showing a state in which the boarding bridge is contracted; FIG. 1 is a longitudinal sectional view showing a boarding bridge according to a first embodiment of the present invention, taken along line III-III of FIG. 1; FIG. FIG. 4 is a front view showing movable legs of the boarding bridge according to the first embodiment of the present invention; It is a top view (a) which shows the rotunda and support part of the boarding bridge which concern on 1st Embodiment of this invention, and a top view (b) which shows the modification. FIG. 2 is a vertical cross-sectional view showing a supporting portion of the boarding bridge according to the first embodiment of the present invention; FIG. 5 is a vertical cross-sectional view showing a second through hole provided in a second boss portion of the supporting portion; FIG. 4 is a plan view showing the rotunda, base end tunnel and floor plate portion of the boarding bridge according to the first embodiment of the present invention; FIG. 3 is a side view showing the rotunda, base end tunnel and floor plate portion of the boarding bridge according to the first embodiment of the present invention; FIG. 5 is a longitudinal sectional view showing a modified example of the supporting portion of the boarding bridge according to the first embodiment of the present invention; It is a top view which shows the modification of the rotunda of the boarding bridge and support part which concern on 1st Embodiment of this invention. 1 is a longitudinal sectional view showing a first example of a shock absorbing portion of a boarding bridge according to a first embodiment of the present invention; FIG. FIG. 6 is a longitudinal sectional view showing a second example of the impact absorbing portion of the boarding bridge according to the first embodiment of the present invention; It is the longitudinal cross-sectional view (a) and the side views (b) and (c) showing the third example of the impact absorbing portion of the boarding bridge according to the first embodiment of the present invention. FIG. 11 is a side view showing a fourth example of the impact absorbing portion of the boarding bridge according to the first embodiment of the present invention; FIG. 5 is a front view showing a modification of the movable leg of the boarding bridge according to the first embodiment of the present invention; FIG. 10 is a plan view showing the rotunda and supporting parts of the boarding bridge according to the second embodiment of the present invention; FIG. 7 is a vertical cross-sectional view showing a supporting portion of a boarding bridge according to a second embodiment of the present invention; FIG. 10 is a vertical cross-sectional view showing the supporting portion of the boarding bridge according to the second embodiment of the present invention, showing a state when the proximal end tunnel is inclined; FIG. 20 is a vertical cross-sectional view showing the supporting portion of the boarding bridge according to the second embodiment of the present invention, showing a state when the base end tunnel is inclined more than the state of FIG. 19; It is the longitudinal cross-sectional view (a), the side view (b) and the lateral cross-sectional view (c) showing the supporting portion of the boarding bridge according to the modification of the first and second embodiments of the present invention. FIG. 5 is a side view showing a first example of the impact absorbing portion of the boarding bridge according to the modification of the first and second embodiments of the present invention; 8A and 8B are side views (a) and (b) showing a second example of the impact absorbing portion of the boarding bridge according to the modification of the first and second embodiments of the present invention; FIG. FIG. 11 is a front view showing movable legs of a boarding bridge according to a third embodiment of the present invention;

[First embodiment]
A boarding bridge 1 according to the first embodiment of the present invention forms a passageway for passengers between an airport or wharf terminal building and an aircraft or ship, connects the terminal building and the aircraft or ship, and allows direct boarding and disembarking.

As shown in FIGS. 1 to 3, the boarding bridge 1 is connected to a rotunda 2 that is fixedly provided on a fixed bridge leading to the terminal building, and is rotatable horizontally and vertically with respect to the rotunda 2. A proximal end tunnel 3 and a distal end side (aircraft or ship side) of the proximal end tunnel 3 are telescopically fitted to the outside of the proximal end tunnel 3, and a movable distal end tunnel 4 and a distal end portion of the distal end tunnel 4 It has a fixed head 5 and the like.

A fixed leg 6 is fixed to the ground at the bottom of the rotunda 2 . A movable leg 7 is provided on the distal end side of the distal end tunnel 4 in the longitudinal direction. The boarding bridge 1 is supported by fixed legs 6 and movable legs 7 .

The head 5 is connected to the boarding/alighting port of an aircraft or a ship on the tip side. Inside the head 5, an operating section (not shown) for driving and operating the movable legs 7 of the boarding bridge 1 is provided.

The cross-sectional area of the hollow portion of the distal tunnel 4 is larger than the cross-sectional area of the proximal tunnel 3 . The distal tunnel 4 moves along the outer peripheral surface of the proximal tunnel 3 . As the front end tunnel 4 moves toward the aircraft side or the ship side, the entire length of the tunnel portion extends, and as the front end tunnel 4 moves toward the rotunda 2 side, the entire length of the tunnel portion shrinks. The tunnel portion of the present invention is not limited to a combination of two tunnels, the proximal end tunnel 3 and the distal end tunnel 4. Three or more tunnels may be connected to have a two or more stage expansion mechanism.

The base end tunnel 3 is rotatable around a rotation axis parallel to the vertical direction provided in the rotunda 2 . Therefore, the proximal end tunnel 3, the distal end tunnel 4, and the head 5 are rotatable in the horizontal plane, for example, in the left-right direction about the rotation axis.

The base end tunnel 3 is rotatable around a rotation axis parallel to the horizontal direction provided in the rotunda 2 . Further, the movable leg 7 can be adjusted in the height direction of the tip tunnel 4 . Therefore, the height of the movable leg 7 is adjusted, and the proximal end tunnel 3, the distal end tunnel 4, and the head 5 are rotated vertically around the rotation axis, thereby adjusting the height of the aircraft or ship. tilted.

The distal end tunnel 4 moves in the longitudinal direction and the lateral direction of the proximal end tunnel 3 and the distal end tunnel 4 by driving the running portion 8 provided on the movable leg 7 to move the movable leg 7 . As shown in FIG. 4, the traveling portion 8 includes wheels 9, connecting members 10, supporting members 11, and the like. The wheels 9 are driving wheels driven by a motor, and are provided as a set of two wheels. Two sets of running parts 8 are installed, one set each on the left end side and the right end side of the movable leg 7 , and the movable leg 7 is provided with a total of four wheels 9 .

The connecting member 10 is a material that connects two wheels 9 . The support member 11 is installed vertically in the center of the connecting member 10 . The supporting member 11 is connected to the connecting member 10 by a pin 12 and is rotatable with the pin 12 as a fulcrum. A lifting part 13 for supporting the tip tunnel 4 is installed on the upper part of the supporting member 11 . The elevating section 13 has two pillars 14 connected to the tip tunnel 4 , and the pillars 14 are provided with an elevating mechanism for elevating the tip tunnel 4 . The elevating mechanism is configured by, for example, a combination of a ball screw and a motor.

It should be noted that the traveling portion 8 of the movable leg 7 according to the present embodiment is not limited to the case where the wheels 9 are provided as a pair of two wheels. As shown in FIG. 16 , the traveling part 8 may have only one wheel 9 in one set, and the wheel 9 may be installed on each of the left end side and the right end side of the movable leg 7 .

In this way, the boarding bridge 1 expands and contracts, and rotates in the horizontal direction and the vertical direction around the rotation shaft provided in the rotunda 2, so depending on the parking state of the aircraft or the anchoring state of the ship , the boarding bridge 1 can be suitably connected to the aircraft or ship.

Inside the rotunda 2 , the proximal end tunnel 3 , the distal end tunnel 4 and the head 5 of the boarding bridge 1 , a passage for passengers to pass is installed from the rotunda 2 toward the head 5 .

As shown in FIG. 3, the proximal tunnel 3 comprises an upper elongated member 19, a lower elongated member 20, a wall portion 21, a bottom portion 22 and a roof portion 23, which together form a hollow tube. A shape is constructed. The tip tunnel 4 includes an upper elongated member 24, a lower elongated member 25, a wall portion 26, a bottom portion 27, and a roof portion 28. These members form a hollow cylindrical shape.

The upper elongated member 19 and the lower elongated member 20 are provided along the longitudinal direction of the base end tunnel 3, and the upper roller 17 and the lower roller 18 contact the upper elongated member 19 and the lower elongated member 25, respectively. configured as possible. In this embodiment, the upper elongated member 19 and the lower elongated member 25 also function as structural beams.

An upper roller 17 is provided inside and at the top of the distal tunnel 4 and moves over the upper surface of the upper elongated member 19 of the proximal tunnel 3 . A lower roller 18 is provided outside and below the proximal tunnel 3 , and the lower roller 18 moves over the upper surface of the lower elongated member 25 of the distal tunnel 4 . The proximal tunnel 3 and the distal tunnel 4 transmit forces to each other via the upper roller 17 and the lower roller 18 , and the distal end of the proximal tunnel 3 moves toward the distal tunnel 4 via the upper roller 17 and the lower roller 18 . supported by

The upper roller 17 and the lower roller 18 are, for example, cylindrical and have an axis of rotation perpendicular to the longitudinal direction of the distal tunnel 4 and the proximal tunnel 3 . When the upper roller 17 contacts the upper elongated member 19 or the lower roller 18 contacts the lower elongated member 25 during movement in the longitudinal direction, the upper roller 17 or the lower roller 18 rotates around the rotation axis.

Next, the support part 30 which is installed between the rotunda 2 and the proximal end tunnel 3 and supports the proximal end tunnel 3 so as to be vertically rotatable with respect to the rotunda 2 will be described.

The support portion 30 has a first boss portion 31 installed on the base end tunnel 3 , a second boss portion 32 installed on the rotunda 2 , and a rod-shaped pin portion 33 .

The support portions 30 are installed one by one so as to form a pair on both sides of the widthwise center of the base end tunnel 3 . Moreover, the support part 30 is installed on the width direction end side of the rotunda 2 and the base end tunnel 3 as shown in FIG. It is installed outside the width direction end of the base end tunnel 3 . In the following, the position where the support part 30 is installed will be described for the case where it is the width direction end of the rotunda 2 and the base end tunnel 3, but the case where it is installed outside the width direction end is also the same. Applicable.

As shown in FIG. 6, the first boss portion 31 is, for example, a plate-like member, and is installed so that the plate surface is perpendicular to the vertical direction. The first boss portion 31 is formed with a first through hole 31</b>A penetrating through the first boss portion 31 . The through-hole direction of the first through-hole 31A is parallel to the horizontal direction.

The second boss portion 32 is, for example, a plate-like member, and is installed so that the plate surface is perpendicular to the vertical direction. A second through hole 32</b>A that penetrates the second boss portion 32 is formed in the second boss portion 32 . The through-hole direction of the second through-hole 32A is parallel to the horizontal direction.

The pin portion 33 is a rod-shaped member having a circular cross section. The pin portion 33 is inserted through both the first through hole 31A formed in the first boss portion 31 and the second through hole 32A formed in the second boss portion 32 . As a result, the proximal end tunnel 3 is supported by the rotunda 2 via the support portion 30 having the first boss portion 31 , the second boss portion 32 and the pin portion 33 , and the proximal end tunnel 3 is vertically movable with respect to the rotunda 2 . It is rotatable in any direction.

The cross section of the first through hole 31A formed in the first boss portion 31 has a circular shape with an inner diameter substantially equal to the outer diameter of the pin portion 33 .

As shown in FIG. 7, the cross section of the second through hole 32A formed in the second boss portion 32 has an elongated oval shape along the vertical direction perpendicular to the horizontal direction. Both ends of the cross section of the second through hole 32A are semicircular, and the cross section between the semicircular shapes is rectangular having the same width as the diameter of the semicircular portion. The length Δ that the pin portion 33 can move within the second through hole 32A is, for example, the amount of inclination H of the road surface on which the boarding bridge 1 is installed, the distance S between the two sets of running portions 8 (see FIG. 4), It is determined based on the distance B between the two supports 30 (see FIG. 5).

Assuming that the inclination angle of the road surface is θ (see FIG. 4), θ=atan (H/S), and the length Δ described above is expressed by Δ=B×tan θ. Note that the length Δ is not limited to this example.

In this embodiment, as shown in FIGS. 8 and 9 , the floor plate portion 34 may be installed over both the floor surface of the base end tunnel 3 and the floor surface of the rotunda 2 . The floor plate portion 34 has a configuration capable of absorbing a step that occurs between the base end tunnel 3 and the rotunda 2 . For example, the floor plate portion 34 includes a first plate member 35 installed on the base end tunnel 3 side, a second plate member 36 installed on the rotunda 2 side, and a hinge 37 to which the first plate member 35 and the second plate member 36 are connected. have

The first plate member 35 and the second plate member 36 respectively have end sides 35a and 36a that are inclined with respect to the longitudinal direction of the base end tunnel 3, and both the end sides 35a and 36a are installed facing each other. The hinge 37 rotatably connects the first plate member 35 and the second plate member 36 at the edge 35 a of the first plate member 35 and the edge 36 a of the second plate member 36 .

An end side 36 b of the second plate member 36 on the rotunda 2 side is connected to the floor surface of the rotunda 2 via a hinge 38 . The second plate member 36 is rotatable with respect to the floor surface of the rotunda 2 . The end side 35b of the first plate member 35 on the side of the proximal end tunnel 3 is not connected to the floor surface of the proximal end tunnel 3 and is slidable along the floor surface.

In this embodiment, when the base end tunnel 3 is inclined with respect to the width direction, the left end side or the right end side of the end portion of the base end tunnel 3 on the rotunda 2 side is positioned above or below the floor surface of the rotunda 2. do. The floor plate portion 34 inclines while moving along the floor surface of the proximal end tunnel 3 , following the inclination of the proximal end tunnel 3 in the width direction. As a result, the floor plate portion 34 can absorb a step that occurs between the proximal end tunnel 3 and the rotunda 2 , so that the rotunda 2 and the proximal end tunnel 3 are continuously connected via the floor plate portion 34 . In addition, the structure of the floor board part 34 is not limited to the example mentioned above. For example, the floor plate portion 34 may include only one plate member, and an elastic body may be disposed on the bottom surface side of the plate member to absorb the step occurring between the base end tunnel 3 and the rotunda 2. .

When the road surface on which the boarding bridge 1 is installed is slanted, or when there is a step on the road surface, the proximal end tunnel 3 is slanted in the width direction. According to this embodiment, when the base end tunnel 3 is inclined in the width direction according to the road surface, the pin portion 33 can move in the vertical direction along the oval second through hole 32A. As a result, unlike the case where both the through-holes of the first boss portion 31 and the second boss portion 32 are circular, the pin portion 33 is not constrained when the base end tunnel 3 is inclined. , a load is applied via the pin portion 33, and in the other support portion 30, the pin portion 33 is in a floating state within the second through hole 32A.

Therefore, a certain or more torsional torque is less likely to occur in the proximal end tunnel 3 , and a large load is not applied to the supporting portion 30 that is the connecting portion between the rotunda 2 and the proximal end tunnel 3 . Also, a large load is less likely to occur on the upper roller 17 and the lower roller 18 that support both the distal end tunnel 4 and the proximal end tunnel 3 . As a result, there is no need to increase the strength of the proximal end tunnel 3 and the distal end tunnel 4 and the strength of the rotunda 2, so that the weight increase and material cost increase in the structure of the proximal end tunnel 3 and the distal end tunnel 4 can be suppressed.

In the above embodiment, the cross section of the first through hole 31A formed in the first boss portion 31 is circular, and the cross section of the second through hole 32A formed in the second boss portion 32 is oval. , the invention is not limited to this example. As shown in FIG. 10, contrary to the above embodiment, the second through hole 32A formed in the second boss portion 32 has a circular cross section, and the first through hole formed in the first boss portion 31 has a circular cross section. The cross section of 31A may be oval. In this case, when the proximal end tunnel 3 is inclined in the width direction, the pin portion 33 can move vertically along the oval first through hole 31A. Also in this case, twisting torque is less likely to occur in the base end tunnel 3, and a large load is not applied to the support portion 30, the upper roller 17, and the lower roller 18.

Further, in the above-described embodiment, the case where the support portion 30 is installed at the width direction end portion of the base end tunnel 3 has been described, but the present invention is not limited to this example.
As shown in FIG. 11 , the support portion 30 may be placed closer to the center than the end portions in the width direction of the base end tunnel 3 . At this time, the distance B' between the two support portions 30 is shorter than the distance B shown in FIG. 5 (B'<B). As a result, when the base end tunnel 3 starts to tilt from a horizontal state and a torque is applied, even at a stage where a small torsional torque is applied compared to the case where the support part 30 is installed at the width direction end of the base end tunnel 3 , the pin portion 33 can move vertically along the first through hole 31A or the second through hole 32A. Each portion of the proximal end tunnel 3 and the distal tunnel 4 (for example, the support portion 30, the upper The load applied to the roller 17 and lower roller 18) can be reduced.

Next, with reference to FIGS. 12 to 15, the impact absorbing portion 40 installed on the support portion 30 will be described.
A shock absorbing portion 40 is provided on the first boss portion 31 or the second boss portion 32 to reduce the impact load generated when the pin portion 33 collides with the first boss portion 31 or the second boss portion 32. .

As shown in FIG. 12, the shock absorbing portion 40 is an elastic body 41 such as rubber or a spring. installed along the surface. Alternatively, the elastic body 41 may be installed along the inner peripheral surface of the second through-hole 32A inside the second through-hole 32A having an oval shape (not shown). As a result, when the pin portion 33 moves, the pin portion 33 does not directly collide with the first through hole 31A or the second through hole 32A, but collides through the elastic body 41, thereby reducing the impact load. . In addition, when the oval shape is provided not in the second through hole 32A but in the first through hole 31A, the elastic body 41 is installed inside the first through hole 31A.

Alternatively, as shown in FIG. 13, the shock absorbing portion 40 is an elastic body 42 (for example, a compression spring) installed between the pin portion 33 and the base end tunnel 3 provided with the first boss portion 31. be. A first through hole 31A having an oval shape is provided in the first boss portion 31 . The elastic body 42 is installed outside the first boss portion 31 and the second boss portion 32 . Accordingly, when the pin portion 33 moves, the impact force is absorbed by the elastic body 42 before the pin portion 33 and the first through hole 31A directly collide. Note that when the second through hole 32A having an oval shape is provided in the second boss portion 32, the shock absorbing portion 40 is installed between the pin portion 33 and the rotunda 2 provided with the second boss portion 32. It is an elastic body 42 to be applied.

As shown in FIGS. 14A and 14B, the impact absorbing portion 40 may have a configuration in which the second boss portion 32 having an oval shape is movable. For example, the second boss portion 32 has two split members 32B and 32C. The split member 32B has a flange portion 43, the split member 32C has a flange portion 44, and the split members 32B and 32C are connected via the flange portions 43 and 44. As shown in FIG. The split member 32B is fixed to the split member 32C by a clevis 45 having a head at one end, a nut 46, and an elastic body 47 installed between the clevis 45 and the flange portion 43. When an impact load is applied to the second boss portion 32, the split member 32B of the second boss portion 32 is tilted with respect to the split member 32C as shown in FIG. is absorbed.
When the first through hole 31A having an oval shape is provided in the first boss portion 31, the impact absorbing portion 40 has a configuration in which the first boss portion 31 is movable, and the first boss portion 31 is divided into two parts. Equipped with split members and the like.

As shown in FIG. 15, the impact absorbing portion 40 may be configured by a main body 48 of the second boss portion 32 made of an elastic material. Accordingly, when an impact load is applied to the second boss portion 32, the impact force is absorbed by the deformation of the main body 48 of the second boss portion 32. As shown in FIG.
Note that the main body of the first boss portion 31 may be made of an elastic material instead of the second boss portion 32 .

[Second embodiment]
Next, a boarding bridge 1 according to a second embodiment of the present invention will be described. In addition, in the following description, configurations and effects that overlap with those of the first embodiment will be omitted.

In the above-described first embodiment, the case where the support portions 30 are installed one by one so as to form a pair on both sides centering on the center in the width direction of the base end tunnel 3 has been described. Not limited. In this embodiment, as shown in FIG. 17, a plurality of supporting portions 30, for example, two supporting portions 30 are installed on the left side and the right side so as to form a pair centering on the center in the width direction of the base end tunnel 3. As shown in FIG.

The support portions 30 include a pair of support portions 30-1 installed on the width direction end side of the base end tunnel 3, and a pair of support portions installed on the center side of the width direction end side of the base end tunnel 3. 30-2. The support portions 30-1 and 30-2 have a first boss portion 31 and a second boss portion 32, respectively.

As in the first embodiment, as shown in FIG. 6, the first through hole 31A formed in the first boss portion 31 has a circular cross section, and the second through hole formed in the second boss portion 32 has a circular shape. 32A may have an elliptical cross section, or, conversely, as shown in FIG. The cross section of the first through hole 31A may be oval.

Below, in both the end side support portion 30-1 and the center side support portion 30-2, the second boss portion 32 provided in the rotunda 2 is formed with an oblong second through hole 32A. A case will be described.

As shown in FIG. 18, the second through hole 32A having an oval shape is wider than the length of the second through hole 32A of the second boss portion 32 installed in the support portion 30-2 on the center side. The length of the second through hole 32A of the second boss portion 32 installed in the support portion 30-1 on the side of the side is longer. Further, as shown in FIG. 18, when the base end tunnel 3 is in a horizontal state, the second through hole 32A having an oval shape is located on the second boss portion 32 installed in the support portion 30-2 on the central side. The second through hole 32A supports the pin portion 33, and the second through hole 32A of the second boss portion 32 installed in the support portion 30-1 on the end side is formed at a position that does not contact the pin portion 33. be done.

Then, as shown in FIG. 19, when a relatively small load is applied to the base end tunnel 3 and the torsion angle generated in the base end tunnel 3 is equal to or less than a predetermined value, the two support portions 30- 2 receives the load, and in the other support portion 30-2 of the two support portions 30-2 installed on the center side, there are gaps above and below the pin portion 33. , and the pin portion 33 is in a floating state. Moreover, in the two support portions 30-1 installed on the end side, there are gaps above and below the pin portion 33, and the pin portion 33 is in a floating state.

That is, when a relatively small load is applied to the base end tunnel 3, the two central support portions 30-2 or one of the two central support portions 30-2 support portion 30-2 receives the load. At this time, the load received by the support portion 30-2 does not exceed the loads of the proximal end tunnel 3 and the distal end tunnel 4. FIG. Below a certain twist angle, the proximal tunnel 3 is free to change its inclination angle.

Therefore, the load received by the upper roller 17 and the lower roller 18 that support both the distal end tunnel 4 and the proximal end tunnel 3 is less than a certain value, and the load applied to the upper roller 17 and the lower roller 18 is lower than when the through hole is not oval. 18 and the load received by the support portion 30 can be reduced.

When a large load is applied to the base end tunnel 3 due to a typhoon or the like, one side of the running portion 8 of the movable leg 7 separates from the road surface, and the load that causes the tip tunnel 4 and the base end tunnel 3 to topple over is applied to the tip tunnel. 4 and proximal tunnel 3.

At this time, in a structure in which only one pair of support portions 30 is installed, a tipping load acts on both the left and right support portions 30 . In addition, since the support portions 30 are installed closer to the center side than the end portions in the width direction of the proximal end tunnel 3, the width between the support portions 30 is small (distance B'). When the width between the support portions 30 is small, a large reaction force acts on the support portions 30 .

On the other hand, in the present embodiment, as shown in FIG. 20, when the torsion angle exceeds a certain level and torque above a certain level is applied to the proximal end tunnel 3, the two support portions 30-1 at the ends in the width direction are bent. It undergoes torsional torque acting on the proximal tunnel 3 .

As a result, it is possible to prevent an excessive load from being applied to the two support portions 30-2 on the central side. In addition, unlike the case where the support portion 30 is installed only on the central side of the width direction end of the base end tunnel 3, when a large load due to a typhoon or the like is applied, the width direction end side of the base end tunnel 3 can bear the load. Thereby, the maximum load input to the support portions 30-1 and 30-2 can be reduced to a predetermined value or less.

[Modifications of First and Second Embodiments]
Next, modified examples of the above-described first and second embodiments will be described with reference to FIGS. 21 to 23. FIG.
In the above-described embodiment, the case where the first through hole 31A or the second through hole 32A through which the pin portion 33 is inserted has been described as having an elongated oval shape along the vertical direction perpendicular to the horizontal direction. The invention is not limited to this example.

In other words, as long as the pin portion 33 has a configuration capable of moving along the vertical direction perpendicular to the horizontal direction, other configurations may be used. Specifically, as shown in FIGS. 21A to 21C, the second boss portion 32 is slidable along the rails 51 with respect to the main body of the rotunda 2 . FIG. 21(a) is a vertical sectional view showing a modification of the support portion 30, FIG. 21(b) is a view taken along the line AA of FIG. 21(a), and FIG. 21(a) taken along line BB of FIG. 21(a). The second boss portion 32 is movable within a range of length Δ shown in FIG. 21(b). Note that the first boss portion 31 instead of the second boss portion 32 may be configured to be slidable along the rail with respect to the main body of the base end tunnel 3 .

In this modified example, the first through-hole 31A and the second through-hole 32A have a circular shape corresponding to the diameter of the pin portion 33 instead of an oval shape.

In the example shown in FIG. 21 , the rail 51 is installed at the end of the rotunda 2 with its longitudinal direction along the vertical direction. The rail 51 is fitted by a fitting portion 52 formed on the second boss portion 32 . The fitting portion 52 has a cross-section along the cross-sectional shape of the rail 51, and is formed in the second boss portion 32 such that its longitudinal direction extends along the vertical direction. Thereby, the second boss portion 32 slides along the rail 51 with respect to the main body of the rotunda 2 . As a result, the pin portion 33 can move along the vertical direction perpendicular to the horizontal direction. Therefore, also in this modified example, the same effects as those of the above-described first and second embodiments can be obtained.

The rotunda 2 is formed with protruding portions 2A and 2B that restrict the vertical movement of the second boss portion 32 . The upward or downward movement of the second boss portion 32 is restricted by the projecting portions 2A and 2B.

The rail 51 is formed on the rotunda 2 and the fitting portion 52 is not limited to being formed on the second boss portion 32 . The rail is formed on the second boss portion 32 and the fitting portion is formed on the rotunda 2 . may be

Also in this modified example, it is possible to provide the shock absorbing portion 40 so as to absorb the shock generated on the pin portion 33 . For example, as shown in FIG. 22, the shock absorbing portion 40 is an elastic body 42 (for example, a compression spring) installed between the second boss portion 32 and the projecting portions 2A and 2B formed on the rotunda 2. be.

Alternatively, as shown in FIG. 23(a), the impact absorbing portion 40 may have a configuration in which the portion of the rotunda 2 that supports the second boss portion 32 is movable. For example, the rotunda 2 comprises two split members 2C, 2D. The split member 2C has a flange portion 43, the split member 2D has a flange portion 44, and the split members 2C and 2D are connected via the flange portions 43 and 44. As shown in FIG. The split member 2C is fixed to the split member 2D by a clevis 45 having a head at one end, a nut 46, and an elastic body 47 installed between the clevis 45 and the flange portion 43. As shown in FIG. When an impact load is applied to the second boss portion 32, the divided member 2C of the rotunda 2 tilts with respect to the divided member 2D as shown in FIG. be.

[Third embodiment]
Next, a boarding bridge 1 according to a third embodiment of the invention will be described. In addition, in the following description, configurations and effects that overlap with those of the first and second embodiments will be omitted.

In the above-described first embodiment, regarding the wheels 9 provided in the traveling portion 8, a case where a total of two sets of one set of two wheels or one set of one wheel is provided was described, but the present invention is applied to this example. Not limited. In this embodiment, as shown in FIG. 24 , only one set of two wheels 9 provided on the traveling portion 8 is provided at the center of the movable leg 7 in the width direction.

In this case, only one supporting member 11 is installed, only one pin 12 is provided, and the base end tunnel 3 supported above the running portion 8 is horizontal with its left and right sides in the width direction balanced. (Yajirobee structure). Therefore, even if the road surface on which the wheels 9 of the traveling portion 8 are in contact with the ground is slanted, the pin 12 absorbs the slanting, so no torsional torque is applied to the base end tunnel 3 .

In addition, the rocking of the base end tunnel 3 installed above the pin 12 is mitigated against the load due to the earthquake, and the structure is strong against the earthquake. This is because when an earthquake occurs, the wheels 9 installed on the ground while the position of the base end tunnel 3 remains constant shake with the ground. Even with this configuration, the balance of the Yajirobee structure may be lost when a load due to an earthquake is input.

On the other hand, in the present embodiment, as in the first and second embodiments, the support portion 30 includes a first boss portion 31 installed in the base end tunnel 3 and a second boss portion installed in the rotunda 2. 32 and a rod-shaped pin portion 33, the cross section of the first through hole 31A formed in the first boss portion 31 is circular, and the cross section of the second through hole 32A formed in the second boss portion 32 is circular. is oblong. Alternatively, in the support portion 30, the second through hole 32A formed in the second boss portion 32 has a circular cross section, and the first through hole 31A formed in the first boss portion 31 has an oval cross section. be.

Accordingly, when an earthquake load is input, the pin portion 33 can move vertically along the oval second through hole 32A or the first through hole 31A. When an earthquake occurs, the proximal end tunnel 3 and the distal end tunnel 4 vibrate, and the pin portions 33 move up and down alternately in the left support portion 30 and the right support portion 30 . When the proximal end tunnel 3 and the distal end tunnel 4 are inclined in the width direction, the pin portion 33 is not constrained unlike the case where the through holes of both the first boss portion 31 and the second boss portion 32 are circular. A load is applied to the support portion 30 via the pin portion 33, and the pin portion 33 of the other support portion 30 is in a state of floating in the second through hole 32A. Therefore, a large torsional torque is less likely to occur in the proximal end tunnel 3, and a large load is not applied to the support portion 30, which is the connecting portion between the rotunda 2 and the proximal end tunnel 3. Also, a large load is less likely to be applied to the upper roller 17 and the lower roller 18 . As a result, without increasing the strength of the rotunda 2 and the proximal end tunnel 3, it is possible to prevent overturning and damage due to earthquakes.

Further, the boarding bridge 1 according to the present embodiment can absorb the input seismic load by continuing the vibration of the proximal end tunnel 3 and the distal end tunnel 4 . Conventionally, in order to absorb vibration, it is conceivable to incorporate a seismic isolation structure material (such as a damper) in the movable leg 7, but according to this embodiment, a simple structure can be used without installing a seismic isolation structure material. Seismic isolation of the boarding bridge 1 can be realized.

1 : Boarding bridge 2 : Rotunda 3 : Base end tunnel 4 : Tip tunnel 5 : Head 6 : Fixed leg 7 : Movable leg 8 : Traveling part 9 : Wheel 10 : Connecting member 11 : Support member 12 : Pin 13 : Lifting part 14 : Column 17 : Upper roller 18 : Lower roller 19 : Upper elongated member 20 : Lower elongated member 21 : Wall portion 22 : Bottom portion 23 : Roof portion 24 : Upper elongated member 25 : Lower elongated member 26 : Wall portion 27 : Bottom 28 : Roof 30, 30-1, 30-2 : Support 31 : First boss 31A : First through hole 32 : Second boss 32A : Second through holes 32B, 32C : Divided member 33 : Pin portion 34 : Floor plate portion 35 : First plate member 36 : Second plate members 37, 38 : Hinge 40 : Shock absorbing portions 41, 42, 47 : Elastic bodies 43, 44 : Flange portion 45 : Clevis 46 : Nut 48 : Body 51 : Rail 52 : Fitting portion

Claims (7)

tunnel part,
a rotunda section that supports the base end side of the tunnel section;
with
a first boss portion installed in the tunnel portion and formed with a first through hole;
a second boss portion installed in the rotunda portion and formed with a second through hole;
a rod-shaped pin portion inserted through the first through-hole and the second through-hole;
has
The first through hole or the second through hole, or the first boss portion or the second boss portion has a configuration in which the pin portion can move along a vertical direction perpendicular to the horizontal direction. ,
The first boss portion and the second boss portion are provided at the width direction end portion of the tunnel portion or at the outer side of the width direction end portion and at the center side of the width direction end portion side of the tunnel portion, A plurality of boarding bridges are installed on the left side and the right side so as to form a pair around the center in the width direction of the tunnel section . 2. The boarding bridge according to claim 1, wherein said first through-hole or said second through-hole has an oval shape elongated along a vertical direction perpendicular to a horizontal direction. 2. A boarding bridge according to claim 1, wherein the first boss portion is slidable relative to the main body of the tunnel portion or the second boss portion is slidable relative to the main body of the rotunda portion along rails. The boarding bridge according to any one of claims 1 to 3, wherein the first boss portion and the second boss portion are located closer to the center than the widthwise end portions of the tunnel portion. A floor plate portion installed over both the floor surface of the tunnel portion and the floor surface of the rotunda portion,
The boarding bridge according to any one of claims 1 to 4 , wherein the floor plate portion has a structure capable of absorbing a step occurring between the tunnel portion and the rotunda portion. 6. The boarding bridge according to any one of claims 1 to 5 , wherein the first boss portion or the second boss portion is provided with an impact absorbing portion configured to reduce an impact load generated on the pin portion. . A movable leg that supports the tunnel portion on the tip side of the tunnel portion,
7. A boarding bridge according to any one of the preceding claims, wherein the movable legs have four or two wheels.

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