JP2020163913A - Boarding bridge - Google Patents

Abstract

To inhibit occurrence of torsional torque in a tunnel part and reduce a load applied to the tunnel part.SOLUTION: A boarding bridge includes: a tunnel part; and a rotunda part supporting the base end side of the tunnel part, and has: a first boss part 31 installed at the tunnel part and formed with a first through hole 31A; a second boss part 32 installed at the rotunda part and formed with a second through hole 32A; and a rod-like pin part 33 inserted into the first through hole 31A and the second through hole 32A. The second through hole 32A has a structure that allows the pin part 33 to move along a vertical direction perpendicular to a horizontal direction.SELECTED DRAWING: Figure 18

Description

The present invention relates to a boarding bridge.

A boarding bridge is, for example, a tunnel-like passage connecting an airport or wharf terminal building to an aircraft or ship, allowing passengers to get on and off directly between the terminal building and the aircraft or ship. The boarding bridge includes a plurality of tunnel portions (passage portions) fitted in a nested manner, and these tunnel portions expand and contract by moving relative to each other in the longitudinal direction. This allows for the various distances that occur between the terminal building and the aircraft or ship.

The boarding bridge is provided with movable legs (mover) that support the tunnel portion. The movable leg has a traveling portion on which wheels are installed and an elevating portion for raising and lowering the tunnel portion. Further, the boarding bridge includes a rotunda that rotatably supports the tunnel portion in the horizontal direction and the vertical direction 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 portions.

Japanese Unexamined Patent Publication No. 2014-166778

In the traveling portion of the boarding bridge, two wheels may be installed as a set in the center in the width direction. This traveling portion includes a connecting member for connecting the wheels of the two wheels and a supporting member installed in the center of the connecting member in the vertical direction, and the supporting member is connected to the connecting member by a pin. There is only one pin connection part, and the tunnel part supported above the running part is maintained horizontally with the left side and the right side in the width direction balanced (Yajirobee structure). That is, even if the road surface on which the wheels of the traveling portion are in contact with the ground is inclined, the pin coupling portion absorbs the inclination, so that torsional torque is unlikely to be applied to the tunnel portion.

On the other hand, in the traveling portion of the boarding bridge, one set of wheels may be installed on the left end side and one set on the right end side. In one set, the wheels may be one wheel or two wheels. In a boarding bridge where two sets of wheels are installed, one on each side, the height position of the left set and the height position of the right set are different when the road surface is inclined or there is a step. , The entire movable leg tilts in the width direction. Therefore, the tunnel portion connected to the movable leg also inclines in the width direction at the portion connected to the movable leg. Then, in the conventional boarding bridge, since the tunnel portion is restrained with respect to the rotunda at the support portion (rotunda pin) connecting the rotunda and the tunnel portion, a torsional torque is applied at the tunnel portion. As a result, a large load is generated on the rollers that support both the tip tunnel and the base 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, which causes problems such as an increase in weight and an increase in material cost.

The present invention has been made in view of such circumstances, and an object of the present invention is 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. To do.

In order to solve the above problems, the boarding bridge of the present invention employs the following means.
That is, the 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, is installed in the tunnel portion, and has a first boss portion in which a first through hole is formed. It has a second boss portion which is installed in the rotunda portion and has a second through hole formed therein, and a rod-shaped pin portion which is 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.

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 penetration. A second boss portion in which a hole is formed is installed. The rod-shaped pin portion is inserted into the first through hole and the second through hole, and the first through hole or the second through hole, or the first boss portion or the second boss portion has the pin portion in the horizontal direction. It has a structure that can be moved along the vertical vertical direction. As a result, 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.

In the above invention, the first through hole or the second through hole may have an oval shape that is long along the vertical direction perpendicular to the horizontal direction.

According to this configuration, the first through hole or the second through hole has a long oval shape along the vertical direction perpendicular to the horizontal direction. As a result, when the tunnel portion is inclined in the width direction, the pin portion can move in the vertical direction along the oval-shaped first through hole or the second through hole.

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

According to this configuration, the first boss portion can slide with respect to the main body of the tunnel portion, or the second boss portion can slide with respect to the main body of the rotunda portion along the rail. As a result, 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 installed on the central side of the widthwise end portion of the tunnel portion.

According to this configuration, the pin portion moves in the vertical direction along the first through hole or the second through hole even when a small torsional torque is applied as compared with the case where the tunnel portion is installed at the widthwise end portion. It is possible. Compared with 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 roller supporting the tunnel portions or the connecting portion between the rotunda portion and the tunnel portion) can be reduced.

In the above invention, the first boss portion and the second boss portion are located outside the width direction end portion or the width direction end portion of the tunnel portion and the central side of the tunnel portion in the width direction end portion side. It may be installed in.

According to this configuration, unlike the case where the first boss portion and the second boss portion are installed only on the central side of the tunnel portion in the width direction, the tunnel portion is subjected to a large load due to a typhoon or the like. The first boss portion and the second boss portion installed outside the width direction end portion or the width direction end portion of the above can bear the load. As a result, 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 floor plate portion is provided 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 generated 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 the step generated 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 a shock absorbing portion having a structure for reducing the impact load generated on the pin portion.

According to this configuration, the first boss portion or the second boss portion is provided with a shock absorbing portion, and the impact load generated on the pin portion can be reduced. The shock 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 shock absorbing portion may have a configuration in which the first boss portion or the second boss portion is movable, and in the shock absorbing portion, the main body of the first boss portion or the main body of the second boss portion is made of an elastic body. It may be configured by

In the above invention, a movable leg for supporting the tunnel portion is provided on the tip end side of the tunnel portion, and the movable leg may have four wheels or two wheels.

According to this configuration, any of the boarding bridges described above when the tunnel portion is supported by the movable legs having four wheels and when the tunnel portion is supported by the movable legs having two wheels. The configuration of the first boss portion and the second boss portion can 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.

It is a vertical sectional view which shows the boarding bridge which concerns on 1st Embodiment of this invention, and shows the state which the boarding bridge is extended. It is a vertical sectional view which shows the boarding bridge which concerns on 1st Embodiment of this invention, and shows the state which the boarding bridge is contracted. It is a vertical cross-sectional view which shows the boarding bridge which concerns on 1st Embodiment of this invention, and is the figure cut along line III-III of FIG. It is a front view which shows the movable leg of the boarding bridge which concerns on 1st Embodiment of this invention. It is a top view (a) which shows the rotunda and the support part of the boarding bridge which concerns on 1st Embodiment of this invention, and is the top view (b) which shows the modification. It is a vertical sectional view which shows the support part of the boarding bridge which concerns on 1st Embodiment of this invention. It is a vertical cross-sectional view which shows the 2nd through hole provided in the 2nd boss part of the support part. It is a top view which shows the rotunda, the base end tunnel and the floor board part of the boarding bridge which concerns on 1st Embodiment of this invention. It is a side view which shows the rotunda, the base end tunnel and the floor board part of the boarding bridge which concerns on 1st Embodiment of this invention. It is a vertical sectional view which shows the modification of the support part of the boarding bridge which concerns on 1st Embodiment of this invention. It is a top view which shows the modification of the rotunda and the support part of the boarding bridge which concerns on 1st Embodiment of this invention. It is a vertical sectional view which shows 1st Example of the shock absorbing part of the boarding bridge which concerns on 1st Embodiment of this invention. It is a vertical cross-sectional view which shows the 2nd Example of the shock absorption part of the boarding bridge which concerns on 1st Embodiment of this invention. It is a vertical sectional view (a) and side view (b), (c) which show 3rd Example of the shock absorbing part of the boarding bridge which concerns on 1st Embodiment of this invention. It is a side view which shows the 4th Example of the shock absorption part of the boarding bridge which concerns on 1st Embodiment of this invention. It is a front view which shows the modification of the movable leg of the boarding bridge which concerns on 1st Embodiment of this invention. It is a top view which shows the rotunda and the support part of the boarding bridge which concerns on 2nd Embodiment of this invention. It is a vertical sectional view which shows the support part of the boarding bridge which concerns on 2nd Embodiment of this invention. It is a vertical cross-sectional view which shows the support part of the boarding bridge which concerns on 2nd Embodiment of this invention, and shows the state when the base end tunnel is inclined. It is a vertical cross-sectional view which shows the support part of the boarding bridge which concerns on 2nd Embodiment of this invention, and shows the state when the base end tunnel is inclined more than the state of FIG. It is a vertical cross-sectional view (a), a side view (b), and a cross-sectional view (c) which show the support part of the boarding bridge which concerns on the 1st and 2nd Embodiment of this invention. It is a side view which shows the 1st Example of the shock absorption part of the boarding bridge which concerns on the 1st and 2nd Embodiment of this invention. It is a side view (a), (b) which shows the 2nd Example of the shock absorption part of the boarding bridge which concerns on the 1st and 2nd Embodiment of this invention. It is a front view which shows the movable leg of the boarding bridge which concerns on 3rd Embodiment of this invention.

[First Embodiment]
The boarding bridge 1 according to the first embodiment of the present invention forms a passage for passengers between the terminal building of the airport or the pier and the aircraft or the ship, connects the terminal building with the aircraft or the ship, and connects the passengers. Allows direct boarding and alighting.

As shown in FIGS. 1 to 3, the boarding bridge 1 is rotatably connected to the rotunda 2 provided fixed to the fixed bridge leading to the terminal building in the horizontal and vertical directions. At the base tunnel 3 and the tip side (aircraft or ship side) of the base tunnel 3, the tip tunnel 4 is nested and fitted to the outside of the base tunnel 3 and is movable, and the tip of the tip tunnel 4 It includes a fixed head 5 and the like.

A fixed leg 6 is fixedly installed on the ground at the lower part of the rotunda 2. A movable leg 7 is provided on the tip side of the tip tunnel 4 in the longitudinal direction. The boarding bridge 1 is supported by the fixed legs 6 and the movable legs 7.

The tip side of the head 5 is connected to the entrance / exit of an aircraft or a ship. Inside the head 5, an operation unit (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 tip tunnel 4 is larger than the cross-sectional area of the base tunnel 3. The tip tunnel 4 moves along the outer peripheral surface of the base tunnel 3. When the tip tunnel 4 moves to the aircraft side or the ship side, the total length of the tunnel portion is extended, and when the tip tunnel 4 moves to the rotunda 2 side, the total length of the tunnel portion is contracted. The tunnel portion of the present invention is not limited to the combination of the two tunnels of the base end tunnel 3 and the tip end tunnel 4, and may have three or more tunnels connected to each other and have two or more stages of expansion / contraction mechanism.

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

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 base end tunnel 3, the tip end tunnel 4, and the head 5 rotate in the vertical direction about the rotation axis, so that the height of the movable leg 7 is adjusted according to the height of the aircraft or the ship. Be tilted.

The tip tunnel 4 moves in the longitudinal direction and the left-right direction of the base tunnel 3 and the tip tunnel 4 by driving the traveling portion 8 provided on the movable leg 7 and moving the movable leg 7. As shown in FIG. 4, the traveling unit 8 includes wheels 9, connecting members 10, supporting members 11, and the like. The wheels 9 are drive wheels driven by a motor, and are provided as a set of two wheels. Two sets of traveling portions 8 are installed, one on the left end side and one set on the right end side of the movable legs 7, and the movable legs 7 are provided with a total of four wheels 9.

The connecting member 10 is a material for connecting the two wheels 9. The support member 11 is installed in the center of the connecting member 10 in the vertical direction. The support member 11 is connected to the connecting member 10 by a pin 12, and can rotate around the pin 12 as a fulcrum. An elevating portion 13 that supports the tip tunnel 4 is installed above the support member 11. The elevating portion 13 has two columns 14 connected to the tip tunnel 4, and the columns 14 are provided with an elevating mechanism for raising and lowering the tip tunnel 4. The elevating mechanism is composed of, for example, a combination of a ball screw and a motor.

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

Since the boarding bridge 1 expands and contracts in this way and rotates in the left-right direction and the up-down direction around the rotation axis provided in the Rotanda 2, it depends on the parked state of the aircraft or the anchored state of the ship. , The boarding bridge 1 can be appropriately connected to an aircraft or a ship.

Inside the rotunda 2, the base tunnel 3, the tip tunnel 4, and the head 5 of the boarding bridge 1, a passage through which passengers pass is installed from the rotunda 2 toward the head 5.

As shown in FIG. 3, the base end tunnel 3 includes an upper elongated member 19, a lower elongated member 20, a wall portion 21, a bottom portion 22, and a roof portion 23, and a hollow cylinder formed by these members. The shape is constructed. Further, the tip tunnel 4 includes an upper long member 24, a lower long member 25, a wall portion 26, a bottom portion 27, and a roof portion 28, and these members form a hollow tubular shape.

The upper long member 19 and the lower long member 20 are provided along the longitudinal direction of the base end tunnel 3, and the upper roller 17 and the lower roller 18 are in contact with the upper long member 19 and the lower long member 25, respectively. It is configured to be possible. In the present embodiment, the upper long member 19 and the lower long member 25 also function as structural beams.

An upper roller 17 is provided inside and above the tip tunnel 4, and the upper roller 17 moves on the upper surface of the upper long member 19 of the base tunnel 3. A lower roller 18 is provided outside and below the base tunnel 3, and the lower roller 18 moves on the upper surface of the lower long member 25 of the tip tunnel 4. The base end tunnel 3 and the tip end tunnel 4 transmit forces to each other via the upper roller 17 and the lower roller 18, and the tip end portion of the base end tunnel 3 is connected to the tip end tunnel 4 via the upper roller 17 and the lower roller 18. Supported by.

The upper roller 17 and the lower roller 18 have, for example, a cylindrical shape, and have a rotation axis perpendicular to the longitudinal direction of the tip tunnel 4 and the base tunnel 3. When the upper roller 17 and the upper elongated member 19 come into contact with each other during the movement in the longitudinal direction, or when the lower roller 18 and the lower elongated member 25 come into contact with each other, the upper roller 17 or the lower roller 18 rotates about the rotation axis.

Next, a support portion 30 installed between the rotunda 2 and the proximal tunnel 3 and supporting the proximal tunnel 3 so as to be rotatable in the vertical direction with respect to the rotunda 2 will be described.

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

The support portions 30 are installed one by one so as to be paired on both sides with the center in the width direction of the base end tunnel 3 as the center. Further, the support portion 30 is installed on the widthwise end side of the rotunda 2 and the base end tunnel 3 as shown in FIG. 5 (a), or the rotunda 2 and the support portion 30 are installed as shown in FIG. 5 (b). It is installed outside the widthwise end of the base tunnel 3. In the following, the position where the support portion 30 is installed will be described in the case where the support portion 30 is installed at the widthwise end portion of the rotunda 2 and the base end tunnel 3, but the same applies when the support portion 30 is installed outside the width direction end portion. Applicable.

As shown in FIG. 6, the first boss portion 31 is, for example, a plate-shaped 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 31A that penetrates the first boss portion 31. The penetration direction of the first through hole 31A is parallel to the horizontal direction.

The second boss portion 32 is, for example, a plate-shaped member, and is installed so that the plate surface is perpendicular to the vertical direction. The second boss portion 32 is formed with a second through hole 32A that penetrates the second boss portion 32. The penetration 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 base 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 base end tunnel 3 moves up and down with respect to the rotunda 2. It is rotatable in the 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 the same as 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 oval shape that is long 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 semicircles is rectangular with the same width as the diameter of the semicircular portion. The length Δ that the pin portion 33 can move in the second through hole 32A is, for example, the inclination amount H of the road surface on which the boarding bridge 1 is installed, and the distance S between the two sets of traveling portions 8 (see FIG. 4). It is determined based on the distance B (see FIG. 5) between the two support portions 30.

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

In the present 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 structure capable of absorbing a step generated between the base end tunnel 3 and the rotunda 2. For example, the floor plate portion 34 is a hinge 37 to which the first plate material 35 installed on the base end tunnel 3 side, the second plate material 36 installed on the rotunda 2 side, and the first plate material 35 and the second plate material 36 are connected. Has.

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

The end side 36b 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 base end tunnel 3 side is not connected to the floor surface of the base end tunnel 3 and can slide along the floor surface.

In the present embodiment, when the base end tunnel 3 is inclined with respect to the width direction, the left end side or the right end side is positioned above or below the floor surface of the rotunda 2 at the end portion of the base end tunnel 3 on the rotunda 2 side. To do. The floor plate portion 34 follows the inclination of the base end tunnel 3 in the width direction and inclines while moving along the floor surface of the base end tunnel 3. As a result, the floor plate portion 34 can absorb the step generated between the base end tunnel 3 and the rotunda 2, so that the rotunda 2 and the base end tunnel 3 are continuously connected via the floor plate portion 34. The configuration of the floor plate portion 34 is not limited to the above-mentioned example. For example, the floor plate portion 34 may include only one plate material and may absorb a step generated between the base end tunnel 3 and the rotunda 2 by disposing an elastic body on the bottom surface side of the plate material. ..

When the road surface on which the boarding bridge 1 is installed is inclined, or when there is a step on the road surface, the base end tunnel 3 is inclined in the width direction. According to the present 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 second through hole 32A having an oval shape. 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, when the base end tunnel 3 is inclined, the pin portion 33 is not restrained, so that one of the support portions 30 In the case, a load is applied through the pin portion 33, and in the other support portion 30, the pin portion 33 floats in the second through hole 32A.

Therefore, the torsional torque of a certain value or more is less likely to be generated in the base end tunnel 3, and a large load is not applied to the support portion 30 which is the connection portion between the rotunda 2 and the base end tunnel 3. Further, a large load is less likely to be generated on the upper roller 17 and the lower roller 18 that support both the tip tunnel 4 and the base tunnel 3. As a result, it is not necessary to increase the strength of the proximal tunnel 3 and the distal tunnel 4 or the strength of the rotunda 2, so that it is possible to suppress an increase in weight and an increase in material cost regarding the structures of the proximal tunnel 3 and the distal tunnel 4.

In the above embodiment, the case where the cross section of the first through hole 31A formed in the first boss portion 31 has a circular shape and the cross section of the second through hole 32A formed in the second boss portion 32 has an oval shape. However, the present 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 base end tunnel 3 is inclined in the width direction, the pin portion 33 can move in the vertical direction along the first through hole 31A having an oval shape. Also in this case, the torsional torque is less likely to be generated 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 embodiment, the case where the support portion 30 is installed at the widthwise 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 installed on the center side of the widthwise end portion of the base end tunnel 3. At this time, the distance between the two support portions 30 is a distance B'shorter than the distance B shown in FIG. 5 (B'<B). As a result, when the proximal tunnel 3 begins to incline from the horizontal state and torque is applied, even at the stage where a smaller torsional torque is applied as compared with the case where the support portion 30 is installed at the widthwise end of the proximal tunnel 3. , The pin portion 33 can move in the vertical direction along the first through hole 31A or the second through hole 32A. Compared to the case where the support portion 30 is installed at the end portion in the width direction and the pin portion 33 does not move until a large torsional torque is applied, each portion of the base end tunnel 3 and the tip end tunnel 4 (for example, the support portion 30 and the upper portion). The load applied to the roller 17 and the lower roller 18) can be reduced.

Next, the shock absorbing portion 40 installed in the support portion 30 will be described with reference to FIGS. 12 to 15.
The first boss portion 31 or the second boss portion 32 is provided with a shock absorbing portion 40, and the impact load generated when the pin portion 33 collides with the first boss portion 31 or the second boss portion 32 can be reduced. ..

As shown in FIG. 12, the shock absorbing portion 40 is, for example, an elastic body 41 such as rubber or a spring, and the elastic body 41 is the outer circumference of the pin portion 33 inside the second through hole 32A having an oval shape. Installed along the surface. Alternatively, the elastic body 41 may be installed inside the second through hole 32A having an oval shape along the inner peripheral surface of the second through hole 32A (not shown). As a result, when the pin portion 33 moves, the pin portion 33 and the first through hole 31A or the second through hole 32A do not directly collide but collide with each other through the elastic body 41, so that the impact load is reduced. .. When the oval shape is provided in the first through hole 31A instead of the second through hole 32A, 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. is there. The first boss portion 31 is provided with a first through hole 31A having an oval shape. The elastic body 42 is installed outside the first boss portion 31 and the second boss portion 32. As a result, 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 with each other. 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 in which the second boss portion 32 is provided. The elastic body 42 to be formed.

As shown in FIGS. 14A and 14B, the shock 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 includes two dividing 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. 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, as shown in FIG. 14 (c), the split member 32B of the second boss portion 32 tilts with respect to the split member 32C, and the elastic body 47 contracts to cause an impact force. Is absorbed.
When the first boss portion 31 is provided with the first through hole 31A having an oval shape, the shock absorbing portion 40 has a configuration in which the first boss portion 31 is movable, and the first boss portion 31 has two. It is equipped with a dividing member and the like.

As shown in FIG. 15, the shock absorbing portion 40 may be configured such that the main body 48 of the second boss portion 32 is made of an elastic body. As a result, when an impact load is applied to the second boss portion 32, the impact force is absorbed by deforming the main body 48 of the second boss portion 32.
The main body of the first boss portion 31 may be formed of an elastic body instead of the second boss portion 32.

[Second Embodiment]
Next, the boarding bridge 1 according to the second embodiment of the present invention will be described. In the following description, the configuration and operation / effect overlapping with 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 be paired on both sides with the center in the width direction of the base end tunnel 3 as the center has been described, but the present invention is in this example. Not limited. In the present embodiment, as shown in FIG. 17, a plurality of support portions 30 are installed on the left side and the right side, for example, two so as to form a pair with the center of the base end tunnel 3 in the width direction as the center.

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

Similar to 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 cross section. The cross section of 32A may be oval, or conversely, as shown in FIG. 10, the cross section of the second through hole 32A formed in the second boss portion 32 has a circular shape and is formed in the first boss portion 31. The cross section of the first through hole 31A may be oval.

Hereinafter, in both the support portion 30-1 on the end side and the support portion 30-2 on the center side, an oval-shaped second through hole 32A is formed in the second boss portion 32 provided in the rotunda 2. The case will be described.

As shown in FIG. 18, the second through hole 32A having an oval shape is an end in the width direction with respect to the length of the second through hole 32A of the second boss portion 32 installed in the support portion 30-2 on the central side. The length of the second through hole 32A of the second boss portion 32 installed in the support portion 30-1 on the portion side is longer. Further, as shown in FIG. 18, when the base end tunnel 3 is in the horizontal state, the second through hole 32A having an oval shape is 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 so as not to come into contact with the pin portion 33. Will be done.

Then, as shown in FIG. 19, when a relatively small load is applied to the proximal tunnel 3 and the twist angle generated in the proximal tunnel 3 is equal to or less than a predetermined value, the two support portions 30- installed on the central side are installed. One of the two support portions 30-2 receives a 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. There is, and the pin portion 33 is in a floating state. Further, 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, one of the two support portions 30-2 installed on the central side or the two support portions 30-2 installed on the central side. Support portion 30-2 receives a load. At this time, the load received by the support portion 30-2 does not exceed the load of the proximal tunnel 3 and the distal tunnel 4. When the twist angle is smaller than a certain twist angle, the inclination angle of the proximal tunnel 3 changes freely.

Therefore, the loads received by the upper roller 17 and the lower roller 18 that support both the tip tunnel 4 and the base tunnel 3 are equal to or less than a certain value, and the upper roller 17 and the lower roller are more than the case where the through hole is not oval. The load received on the 18 and the support portion 30 can be reduced.

Then, when a large load is applied to the base tunnel 3 due to a typhoon or the like, one side of the traveling portion 8 of the movable leg 7 is separated from the road surface, and a load that causes the tip tunnel 4 and the base tunnel 3 to tip over is applied to the tip tunnel. Join 4 and the base tunnel 3.

At this time, in a structure in which only one pair of support portions 30 is installed, an overturning load acts on both the left and right support portions 30. Further, since the support portion 30 is installed on the central side of the base end tunnel 3 on the width direction end side, 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 twist angle becomes a certain value or more and a torque of a certain value or more is applied to the base end tunnel 3, the two support parts 30-1 on the width direction end side are formed. It receives the torsional torque acting on the base 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. Further, unlike the case where the support portion 30 is installed only on the central side of the base end tunnel 3 in the width direction, when a large load is applied due to a typhoon or the like, the width direction end side of the base end tunnel 3 is applied. The support portion 30-1 installed in the above can bear the load. As a result, the maximum load input to the support portions 30-1 and 30-2 can be reduced to a predetermined value or less.

[Modified examples of the first embodiment and the second embodiment]
Next, modifications of the first embodiment and the second embodiment described above will be described with reference to FIGS. 21 to 23.
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 a long oval shape along the vertical direction perpendicular to the horizontal direction has been described. The invention is not limited to this example.

That is, other configurations may be used as long as the pin portion 33 has a configuration in which it can move along the vertical direction perpendicular to the horizontal direction. Specifically, as shown in FIGS. 21 (a) to 21 (c), the second boss portion 32 can slide and move along the rail 51 with respect to the main body of the rotunda 2. 21 (a) is a vertical cross-sectional view showing a modified example of the support portion 30, FIG. 21 (b) is a view taken along the line AA of FIG. 21 (a), and FIG. 21 (c) is a view taken along the line AA. , BB line arrow view of FIG. 21 (a). The second boss portion 32 can move within the range of the length Δ shown in FIG. 21 (b). In addition, instead of the second boss portion 32, the first boss portion 31 may be configured to be slidable along the rail with respect to the main body of the base end tunnel 3.

In this modification, the first through hole 31A and the second through hole 32A are not oval, but circular in shape corresponding to the diameter of the pin portion 33.

In the example shown in FIG. 21, the rail 51 is installed at the end of the rotunda 2 in the 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 in the longitudinal direction along the vertical direction. As a result, 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 modification, the same action and effect as those of the first and second embodiments described above are obtained.

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

The rail 51 is formed on the rotunda 2, and the fitting portion 52 is 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 done.

Further, also in this modified example, the shock absorbing portion 40 can be provided so as to absorb the shock generated in 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 protruding portions 2A and 2B formed on the rotunda 2. is there.

Alternatively, as shown in FIG. 23A, the shock absorbing portion 40 may have a configuration in which the portion supporting the second boss portion 32 in the rotunda 2 is movable. For example, the rotunda 2 includes two dividing members 2C and 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. 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. When an impact load is applied to the second boss portion 32, as shown in FIG. 23B, the split member 2C of the rotunda 2 tilts with respect to the split member 2D, and the elastic body 47 contracts to absorb the impact force. To.

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

In the first embodiment described above, with respect to the wheels 9 provided in the traveling portion 8, a case where one set of two wheels or one set of one wheel is provided in total of two sets has been described, but the present invention is in this example. Not limited. In the present embodiment, as shown in FIG. 24, as for the wheels 9 provided in the traveling portion 8, one set of two wheels is installed in the center of the movable leg 7 in the width direction.

In this case, only one support member 11 is installed, the pin 12 is in one place, and the base end tunnel 3 supported above the traveling portion 8 is horizontal with the left side and the right side in the width direction balanced. Maintained in (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 inclined, the pin 12 absorbs the inclination, so that the torsional torque is not applied to the base end tunnel 3.

Further, with respect to the load due to the earthquake, the shaking of the proximal tunnel 3 installed above the pin 12 is alleviated, 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 sways with the ground. Even with this configuration, if a load due to an earthquake is input, the balance due to the Weeble structure may be lost.

On the other hand, in the present embodiment, as in the first and second embodiments, the support portion 30 has the first boss portion 31 installed in the base end tunnel 3 and the 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 has a circular shape, and the cross section of the second through hole 32A formed in the second boss portion 32. Is an oval shape. Alternatively, the support portion 30 has a circular cross section of the second through hole 32A formed in the second boss portion 32, and the cross section of the first through hole 31A formed in the first boss portion 31 has an oval shape. is there.

As a result, when the load due to the earthquake is input, the pin portion 33 can move in the vertical direction along the second through hole 32A or the first through hole 31A having an oval shape. When an earthquake occurs, the base tunnel 3 and the tip tunnel 4 vibrate, and the pin portions 33 move up and down alternately in the support portion 30 on the left side and the support portion 30 on the right side. When the base end tunnel 3 and the tip end tunnel 4 are inclined in the width direction, 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. A load is applied to the support portion 30 via the pin portion 33, and the pin portion 33 is floated in the second through hole 32A at the other support portion 30. Therefore, a large torsional torque is less likely to be generated in the base end tunnel 3, and a large load is not applied to the support portion 30 which is the connection portion between the rotunda 2 and the base end tunnel 3. Further, a large load is less likely to be generated on the upper roller 17 and the lower roller 18. As a result, it is possible to prevent the rotunda 2 and the base tunnel 3 from tipping over or being damaged by an earthquake without increasing the strength.

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

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

Claims (8)

The tunnel part and
A rotunda portion that supports the base end side of the tunnel portion and
With
A first boss portion installed in the tunnel portion and having a first through hole formed therein,
A second boss portion installed in the rotunda portion and having a second through hole formed therein,
A rod-shaped pin portion inserted through the first through hole and the second through hole,
Have,
The first through hole or the second through hole, or the first boss portion or the second boss portion is a boarding having a configuration in which the pin portion can move along a vertical direction perpendicular to the horizontal direction. bridge. The boarding bridge according to claim 1, wherein the first through hole or the second through hole has a long oval shape along a vertical direction perpendicular to a horizontal direction. The boarding bridge according to claim 1, wherein the first boss portion is slidable with respect to the main body of the tunnel portion, or the second boss portion is slidable with respect to the main body of the rotunda portion along a rail. The boarding bridge according to any one of claims 1 to 3, wherein the first boss portion and the second boss portion are installed on the central side of the widthwise end portion of the tunnel portion. The first boss portion and the second boss portion are installed outside the width direction end portion or the width direction end portion of the tunnel portion and on the center side of the width direction end portion side of the tunnel portion. The boarding bridge according to any one of claims 1 to 3. A floor plate portion installed over both the floor surface of the tunnel portion and the floor surface of the rotunda portion is provided.
The boarding bridge according to any one of claims 1 to 5, wherein the floor plate portion has a structure capable of absorbing a step generated between the tunnel portion and the rotunda portion. The boarding bridge according to any one of claims 1 to 6, wherein the first boss portion or the second boss portion is provided with a shock absorbing portion having a structure for reducing the impact load generated on the pin portion. .. A movable leg for supporting the tunnel portion is provided on the tip end side of the tunnel portion.
The boarding bridge according to any one of claims 1 to 7, wherein the movable leg has four wheels or two wheels.

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