JPH0543807B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] This invention is applicable to cases where the distance between a certain point and another point is , relates to a movable bridge that allows people to run and walk when it is unsuitable for walking.

[Conventional technology]

Conventionally, when a vehicle gets on or off a ship docked at a sandy beach, etc., a gangplank is installed diagonally from the ship toward the sandy beach, etc., and vehicles and people can pass on this gangplank. I was worried. However, since there is a limit to the length of the spanning board, the tip of the spanning board may not reach a point suitable for vehicles and people to pass. Therefore, in order to facilitate the passage of vehicles and people in such cases, it was necessary to assemble a temporary pier with members such as pillars and lining boards on the sandy beach.

In addition, because the sandy beach where ships dock is tilted toward the sea, it was necessary to build a temporary embankment of earth and sand to create a temporary passage for vehicles.

[Problem that the invention seeks to solve]

However, in the case of such conventional temporary piers, construction requires a large number of materials,
This had the disadvantage that assembly and construction required time and cost. The present invention has been made by paying attention to such conventional problems, and aims to solve the above problems.

[Means for solving problems]

In this application, an enlarged part is formed around the circumference of the lower surface of the deck of the bridge body, and the bridge body is supported in a suspended state in the air by air pressure blown out from an air outlet opened inside the circumference of the enlarged part. The first invention is characterized in that it is provided with an elevating mechanism comprising a mechanism, a leg rod that is erected upright on the bridge body so as to be freely raised and lowered, and a drive device that raises and lowers the leg rod so that it can be freely locked with respect to the bridge body, and , a levitation mechanism that forms an enlarged part around the circumference of the lower surface of the deck of the bridge body and supports the bridge body in a suspended state in the air by air pressure blown out from an air outlet opened inside the circumference of the enlarged part; A buoyancy mechanism that supports the bridge body in a floating state on the water surface by a floating body attached to the body, a leg rod that is erected on the bridge body so that it can be raised and lowered, and a drive device that raises and lowers the leg rod to the bridge body itself. A second invention is characterized in that an elevating mechanism is provided, and further, an ampulla is formed around the periphery of the lower surface of the deck of the bridge body, and air is blown out from an air outlet opened inside the circumference of the ampulla. A levitation mechanism that supports the bridge body in a floating state using air pressure; a movement mechanism that is attached to the bridge body so that it can run on the ground;
A third aspect of the present invention is that a lifting mechanism is provided, which includes a leg rod that is erected on the bridge body so that it can be raised and lowered, and a drive device that raises and lowers the leg rod so that it can be locked with respect to the bridge body.

[Effect]

In the first invention according to this application, the bridge body is levitated in the air by a flotation mechanism, and the bridge body supported in the flotation state is transported by human power or the like, and then the legs of the elevating mechanism are lowered, and the bridge body is lowered to a sandy beach or the like. The bridge body will be seated on the ground at the equipment location via the leg levers, and the floor level of the bridge body will be adjusted after seating to facilitate passage between the bridge and ships, etc. that have come ashore.

In the second invention according to this application, when a bridge body floating in the air is transported and positioned on the water surface, even when the air pressure of the levitation mechanism decreases, the buoyancy force of the buoyancy mechanism can be applied to the bridge body. Until the bridge body is seated by the lifting mechanism,
It can be supported floating on the water surface without being submerged. Furthermore, it can be transported while floating on the water surface using a buoyancy mechanism without using a levitation mechanism, making it an amphibious movable bridge.

In the third invention according to this application, an appropriate mechanism is selected between transportation by aerial levitation and movement by running on the ground, depending on the nature and condition of the ground on which the bridge body is to be transferred, such as hardness, softness, unevenness, etc.

〔Example〕

1 to 7 are diagrams showing a first embodiment. Reference numerals 1 and 1 denote a pair of main girders facing each other, which are assembled with tension or compression members to form a truss shape. The lower chord member 1b in these main girders 1, 1,
A plurality of cross beams 2 to 2 are installed between 1b, and floor slabs 3 to 3 are installed between the upper end surfaces of these cross beams 2 to 2 so that they are flush with each other, so that the vehicle can It forms a floor surface that can be walked on. Further, a bottom plate 4 is provided below the floor slabs 3 to 3 and is fixed in parallel to the floor slabs 3 to 3 and constitutes the lower surface of the bridge. Note that this bottom plate 4 is airtight. These main girders 1, cross girders 2, floor slabs 3, and bottom plates 4
This constitutes the bridge body A.

A tubular enlarged part 10 for floating the bridge body A is tightly installed around the lower peripheral edge of the bottom plate 4, and an air outlet 10a is provided on the inner wall around the enlarged part 10. . The air outlet 10a is provided on the inside of the circumference of the ampullae 10, but it may also be provided with a large number of holes along the circumference direction, or a groove may be provided on the inner wall along the circumference direction. . An air pressure feeding pipe 11 is connected to the enlarged portion 10, and pressurized air is guided into the enlarged portion 10 from a separately prepared blower (not shown) through the air pressure feeding pipe 11. Also,
At a predetermined position inside the circumference of the enlarged portion 10, another air pressure feeding pipe 11 is guided and opened downward, and this is used as an air outlet 11a. Such enlarged portion 10 and air outlets 10a, 11
a constitutes the floating mechanism of the present invention.

Next, two erecting supports 20 are provided on both outer sides of the piers of the main girders 1 to 1 constituting this bridge, respectively, so that the leg rods 20a can be raised and lowered. This erecting support 20 is constructed by raising and lowering the leg rod 20a, which is vertically provided on the bridge body A so that it can be raised and lowered, by fluid pressure operation.
The leg rod 20a is equipped with a drive device (not shown) that locks the bridge body A at any position where the leg rod 20a is raised or lowered.
The bridge body A is lowered to seat the bridge body A on the ground via the leg rods 20a, and the height position and posture of the seated bridge body A are adjusted by changing the locking position with respect to the bridge body A as appropriate by raising and lowering the bridge body A. adjust. The leg rod 20a and the driving device for the erecting support 20 constitute the elevating mechanism of the present invention.

According to the embodiment, as shown in FIGS. 4 and 5, the entire bridge body A can be made to float in the air by blowing out high-pressure air to the inside of the enlarged portion 10 on the lower surface of the bottom plate 4. This is the state shown in FIG. 5, and the air is blown out through the air outlets 10a and 11a, but only the air outlet 10a may be used if the bridge body A can float. Since the bridge body A supported in this floating state has reduced frictional resistance with the ground, the bridge body A can be easily transported to a place such as a sandy beach where the ship B comes alongside. Note that this bridge body A is transported in a floating state by a bulldozer or other power source or by human power. After the bridge body A transported in this manner is seated on the ground by operating the leg rods 20a of the erection support 20 to extend downward,
Stable installation is achieved by adjusting the locking position of the leg rod 20a with respect to the bridge body A (6th
figure). Then, a connecting bridge 12 is extended from the berthed ship B to the deck 3 of the bridge body A, and using this, the vehicle C runs from the ship B toward land (Fig. 7).

FIGS. 8 and 9 show the second embodiment. This embodiment is an example in which a floating body 5 is attached to the bridge body A of the first embodiment. The floating body 5 is made of foamed synthetic resin and is installed between the deck slab 3 and the enlarged portion 10 of the bridge body A, and constitutes the buoyancy mechanism of the present invention. Even if the floating mechanism of the bridge body A, which is transported to the surface of the water in a floating state, malfunctions or the air pressure decreases, the floating body 5 will be able to continue until the bridge body A is seated by the elevating mechanism. Buoyancy can be applied to the bridge body A to keep it floating on the water surface so that it does not sink into the water. Further, on the water surface, the bridge body A can be transported while floating on the water surface using only the buoyancy of the floating body 5 without using the floating mechanism.
Of course, the floating body 5 may be constructed from a hollow cylinder or other member. The other configurations are the same as those of the first embodiment, and the position of the air outlet of the ampullae 10 and the direction of the air outlet are also the same.

Furthermore, FIGS. 10 and 11 show a third embodiment.

That is, the bottom plate 4 of the bridge body A of the first embodiment
On the lower surface, running wheels 30 are mounted at four predetermined locations to enable land transportation, thereby configuring a transportation mechanism different from transportation in a floating state by air blowing from the enlarged portion 10. . In flat places such as roads, these running wheels 30 to 30
The bridge body A can be transported by using the levitation mechanism consisting of the enlarged portion, etc., using pneumatic pressure to transport the bridge body A in places with uneven surfaces or soft sandy beaches. .

In addition, when the installed bridge is no longer needed, the leg rods 20a of the erection support 20 are raised, it is floated by the air pressure of the levitation mechanism, and it is transferred and removed by pulling or pushing with a bulltozer, human power, etc. It is.

In addition to the embodiments described above, as shown in FIGS. 12 to 15, an endless crawler belt 40 is used as a moving mechanism of the present invention.
It is also possible to use this to enable driving suitable for sandy beaches and uneven areas.

That is, FIGS. 12 and 13 show the fourth embodiment, and the first embodiment, which is the third embodiment described above, shows the fourth embodiment.
In place of the four running wheels 30 in Figures 0 and 11, four
Two endless crawler tracks 40 are attached to the lower surface of the bottom plate of the bridge body A. The endless crawler belt 40 uses a known structure itself.

14 and 15 show a fifth embodiment, in which a total of two endless crawlers 40 are mounted on the left and right sides of the longitudinal center of the bridge body A.

Moreover, it goes without saying that various shapes and structures of the bridge body A may be applied in addition to the above embodiments.

Furthermore, it is also possible to attach a joining device to the bridge deck section to connect with the bow ramp of a ship berthed.

In addition, in the second embodiment shown in FIGS. 8 and 9,
It goes without saying that the moving mechanisms shown in FIGS. 10 to 15 may be provided.

〔Effect of the invention〕

As explained above, according to the first invention, there is provided a levitation mechanism in which a bulge is formed around the lower surface of the deck slab of the bridge body and the bridge body is levitated in the air using air pressure; By being equipped with a lifting mechanism that raises and lowers the leg levers relative to each other, it facilitates movement to places such as roads and sandy beaches, and speeds up the installation of piers for ships, etc. This has the effect of completely eliminating the labor involved in construction work.

Further, according to the second invention, in addition to the first invention, a buoyancy mechanism is provided that applies buoyancy to the bridge body and causes it to float on the water surface, so that if the buoyancy mechanism fails on the water surface, However, it is possible to float the bridge body on the water surface without sinking, or to transport it while floating on the water surface using the buoyancy of the buoyancy mechanism without using a levitation mechanism.

Furthermore, according to a third invention, in addition to the first invention, by providing a moving mechanism configured to move the bridge body on the ground, the bridge body can be moved according to the nature of the ground up to the installation location of the bridge body. This makes it possible to select either aerial transportation using the floating mechanism or ground traveling using the moving mechanism.

Furthermore, since the lifting mechanism can change the lifting height of the bridge body with respect to the leg rods, it is possible to adjust and fix the bridge floor level to the height at which the bow ramp of the berthed ship is lowered.

[Brief explanation of the drawing]

Fig. 1 is a side view showing the first embodiment, Fig. 2 is a plan view of the same, Fig. 3 is a front view of the same, Fig. 4 is an explanatory view of the same part, and Figs. An explanatory diagram showing the procedure for using the bridge, Fig. 8 is a side view showing the second embodiment, Fig. 9 is a front view of the same, Fig. 10 is a side view showing the third embodiment, and Fig. 11 is the same. Plan, 1st
2 is a side view showing the fourth embodiment, FIG. 13 is a plan view thereof, and FIG. 14 is a side view showing the fifth embodiment.
FIG. 15 is a plan view of the same. A... Bridge body, 3... Floor slab, 5... Floating body, 10...
... ampulla, 10a, 11a... air outlet,
DESCRIPTION OF SYMBOLS 11... Pipe for air pressure feeding, 20... Support for erecting, 20a... Leg lever, 30... Wheel, 40... Endless track.

Claims (1)

[Scope of Claims] 1. An enlarged portion is formed around the circumference of the lower surface of the deck of the bridge body, and the bridge body is supported in a suspended state in the air by air pressure blown out from an air outlet opened inside the circumference of the enlarged portion. 1. A movable bridge comprising: a levitation mechanism, and a lifting mechanism comprising a leg rod that is erected upright on a bridge body so that it can be raised and lowered, and a drive device that raises and lowers the leg rod so that it can be locked to the bridge body. . 2. A levitation mechanism that forms an enlarged part around the circumference of the lower surface of the deck of the bridge body and supports the bridge body in a suspended state in the air by air pressure blown out from an air outlet opened inside the circumference of the enlarged part; A buoyancy mechanism that supports the bridge body in a floating state on the water surface by a floating body attached to the body, a leg rod that is erected on the bridge body so that it can be raised and lowered, and a drive device that raises and lowers the leg rod so that it can be freely locked to the bridge body. A movable bridge characterized by being provided with a lifting mechanism consisting of. 3. A levitation mechanism that forms an enlarged part around the circumference of the lower surface of the deck slab of the bridge body and supports the bridge body in a suspended state in the air by air pressure blown out from an air outlet opened inside the circumference of the enlarged part; an elevating mechanism consisting of a moving mechanism attached to the body so as to be able to run on the ground; a leg rod erected on the bridge body so that it can be raised and lowered; and a drive device that raises and lowers the leg rod so that it can be locked to the bridge body; A movable bridge characterized by the provision of.