JPH10211843A - Mobile bridging device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To attain forming in small size, lightening of weight, and reduction of a cost, also attain improvement of workability, in a mobile bridging device. SOLUTION: A device comprises a link bridge 11 having a running path 25 of horizontal/half slope running path 25a, 25b with a vehicle or the like possible to pass in an upper surface also provided with a base seat 22 and space part 23 in a lower part and a transport carriage 12 having a vertically movable load carrying platform 31 to be forward/backward and laterally movable by a running steering extension/contraction mechanism 32 also to intrude in the space part 23 of the link bridge 11 to be liftable with the platform 31 into contact with the base seat 22.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile erection bridge device that is movable and that allows vehicles and the like to travel on an upper portion.

[0002]

2. Description of the Related Art FIG. 12 schematically shows a general shipping operation. As shown in FIG. 12, when loading cargo at a port, the dump truck 101 loads and transports the cargo 102 on the cargo bed, and lowers it to a predetermined position on the quay 103. This quay 103
Is provided with a clamshell crane 104, and a carrier 106 is waiting at sea 105. Accordingly, the clamshell crane 104 is operated to load the cargo 102 on the quay 103 into the carrier 106.

However, as described above, the dump truck 101
If the cargo 102 carried by the ship is once lowered to the quay 103 and then loaded onto the carrier 106 using a clamshell crane 104, the loading time is long and the work efficiency is not good, so a mobile erection bridge is used. It has been proposed.

FIG. 13 schematically shows a conventional movable bridge. As shown in FIG. 13, a traveling path 202 having slopes at front and rear is formed in an upper part of a conventional movable bridge 201, and a dump truck 101 can travel on the traveling path 202. The movable bridge 201 has front and rear traveling wheels 203 mounted on a lower portion thereof, and can be driven by a driving device (not shown). Therefore, when loading cargo at a port, the mobile construction bridge 201 is run and positioned on the quay 103 beside a carrier (not shown), and the dump truck 101 loaded with the cargo is loaded on the movable construction bridge 201. Then, the vehicle travels along the traveling path 202 and moves upward, where the cargo is loaded onto the carrier 106.

[0005]

However, the above-mentioned conventional movable bridge 201 has the following problems in terms of the construction of the apparatus itself and work.

That is, since the movable bridge 201 needs to be moved to a predetermined position for use, the traveling bridge 203 is equipped with the traveling wheel 203 and its driving device. For this reason, there is a problem that the manufacturing cost of one unit is high, and when a large number of movable bridges 201 are used, the use cost increases. And
This drive requires regular maintenance, but since the movable bridge 201 itself is large, it is difficult to transport it to a maintenance shop and maintenance takes a long time. In addition, since the dump truck 101 loaded with luggage runs on the movable erection bridge 201 stopped at a predetermined position, a large load acts on the traveling wheel 203 at this time, and the traveling wheel 203 Sufficient strength must be ensured, resulting in an increase in size and cost. On the other hand, mobile bridges
In order to prevent the load from acting on the traveling wheel 203 of the 201, a separate support mechanism must be applied to the movable bridge 201, and in this case, the cost is increased.

[0007] In addition, a traveling path 202 for the dump truck 101 to travel on is provided in the upper part of the conventional movable bridge 201, and slopes are formed before and after the traveling path 202. Therefore, the total length of the mobile bridge 201 becomes long, and the bridge 201 itself becomes large. Then, there is a problem that the range of use of the mobile erection bridge 201 is limited, and it is difficult to use the mobile erection bridge 201 in a place with a limited working space such as a harbor.

An object of the present invention is to solve such a problem, and an object of the present invention is to provide a mobile erection bridge device which is reduced in size and weight and cost, and is improved in workability.

[0009]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, a mobile erection bridge device according to the present invention has an upper surface having a road surface on which a vehicle or the like can pass and a space portion and a pedestal provided at a lower portion. A bridge, and a bridge moving means having a vertically movable bed, capable of moving forward and backward, being able to traverse, and entering a space of the erection bridge so that the bed is in contact with the pedestal. It is assumed that.

[0010] The mobile bridge device of the present invention is characterized in that the road surface on the upper surface of the bridge is a one-sided slope.

[0011]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a front view of a mobile bridge device according to an embodiment of the present invention, FIG. 2 is a side view of the mobile bridge device of the present embodiment, and FIG. 3 is a carriage of the mobile bridge device. 4, FIG. 4 is a side view of the carriage, FIG. 5 is a plan view of the carriage, FIG. 6 is a detail showing the traveling steering telescopic drive mechanism, FIG. 7 is a front view showing the operation state of the carriage, and FIG. FIG. 9 is a front view showing the operation state of the mobile erection bridge device, FIG. 9 is a side view showing the operation state of the mobile erection bridge device, and FIG. 10 is a schematic view showing a case where the mobile erection bridge device of the present embodiment is used for port arrangement. FIG. 11 schematically shows a case where the mobile erection bridge device of the present embodiment is arranged on a general road under construction.

As shown in FIGS. 1 and 2, a mobile bridge device according to the present embodiment includes a bridge 11 having a road surface on which a vehicle or the like can pass, and a bridge moving device capable of moving the bridge 11. The transport bridge 12 is used as a means.
1 and the transport vehicle 12 can be separated.

That is, in the bridge 11, four piers 2
The pedestal 22 is horizontally supported by 1, and below the pedestal 22 is formed a space 23 having a predetermined size and into which the transport trolley 13 can enter. A running path 25 as a road surface on which vehicles and the like can pass is provided by an upper portion of the pedestal 22 by a plurality of supports 24.
5 is composed of a horizontal runway 25a and a slope runway 25b which is continuous with one end of the horizontal runway 25a.

On the other hand, as shown in FIGS. 3 to 5, four traveling steering telescopic drive mechanisms 32 are mounted on the lower surface of the horizontal gantry 31, and A table 33 is provided. That is, the operator can ride on one of the front and rear driver's cabs 33 and operate each of the traveling steering telescopic drive mechanisms 32 by an operation mechanism (not shown), whereby the gantry 31 can be moved forward and backward, and the traveling direction can be changed. Can be changed, and the gantry 31 can be moved up and down.

The four traveling steering telescopic drive mechanisms 32 have substantially the same configuration. As shown in FIG. 6, a mounting bracket 41 is fixed to the lower surface of the gantry 31, and the mounting bracket 41 is not shown. The rotating body 42 is rotatably supported by the bearing, and a driven gear 43 is fixed to the outer peripheral portion of the rotating body 42. On the other hand, an L-shaped support bracket 44 is fixed to the mounting bracket 41,
A steering motor 46 having a rotary encoder 45 is mounted on the support bracket 44, and a drive gear 47 fixed to an output shaft of the steering motor 46 meshes with the driven gear 43. An upper end of a boom 48 is fixed to a lower surface of the rotating body 42, and a connecting shaft 4 is attached to a lower end of the boom 48.
An arm 50 is rotatably connected by 9, and an axle 51 is rotatably attached to a lower end of the arm 50, and a traveling wheel 52 is fixed to each shaft end of the axle 51. A traveling motor 54 having a rotary encoder 53 is attached to the lower end of the arm 50.
Traveling wheel 5 via axle 51 by traveling motor 54
2 can be rotated. Further, an elevating cylinder 55 is mounted on the boom 48, and the distal end of the drive rod 56 is connected to the arm 50.

Accordingly, in the traveling steering telescopic drive mechanism 32, as shown in FIGS.
4 and the left and right traveling wheels 5 together with the axle 51
By rotating 2, the transport trolley 12 can be moved forward and backward. When the steering motor 46 is driven,
The driving gear 47 rotates to rotate the driven body 43 meshed with the driving gear 47 to rotate the rotating body 42, and the traveling wheels 5 via the boom 48 and the arm 50.
By changing the direction of No. 2 and, at this time, steering the four running wheels 52 integrally or individually, the running direction of the carriage 12 can be changed to a desired direction. Further, when the drive rod 56 is expanded and contracted by driving the elevating cylinder 55,
By rotating the arm 50 with respect to the boom 48, the gantry 31 of the transport trolley 12 can be moved up and down.

Here, the operation of the mobile bridge device of the present embodiment will be described.

FIGS. 1 and 2 show a mobile bridge device.
As shown in FIG.
The base 31 lifts the pedestal 22 of the erection bridge 11 by extending the drive rod 56 of the lifting / lowering cylinder 55 and rotating the arm 50, and the transport trolley 12 is connected to the erection bridge 1
1 can be moved up. In this state, the traveling motor 54 in each traveling steering telescopic drive mechanism 32 of the transport vehicle 12 is driven to move the transport vehicle 12 forward or backward by each traveling wheel 52. At this time, the steering motor 46 is driven to drive the traveling wheel 52 , The traveling direction of the transport vehicle 12 is steered in a desired direction.

Then, the carriage 12 is stopped at a desired position. At this point, the drive rod 56 of the elevating cylinder 55 is contracted to rotate the arm 50 in the opposite direction to that described above. As shown, the bridge 11 is lowered together with the gantry 31 to release the support of the gantry 11 by the gantry 31 of the transport vehicle 12. Here, since the transport vehicle 12 is separated from the erection bridge 11, each traveling steering telescopic drive mechanism 3 of the transport vehicle 12
In step 2, the traveling motor 54 and the steering motor 46 are driven to rotate and steer each traveling wheel 52 to cause the transport vehicle 12 to escape from the space 23 of the bridge 11. Thereafter, the transport vehicle 12 is moved to another bridge (not shown) to enter the space 23 of the bridge, lift the bridge by the lifting cylinder 55 and support it. To the position of.

In this way, the bridge 1
1 can be moved, and only this bridge 11 can be arranged at a predetermined position. For example, as shown in FIG. 10, when this bridge 11 is arranged in a harbor, the bridge 11 is positioned on the quay 63 on the side of the carrier 62 anchored on the sea 61, and the loaded dump is loaded. The truck 64 travels on the traveling path 25 of the bridge 11 and moves upward, where the cargo can be loaded on the carrier 62. In addition, as shown in FIG. 11, when the erection bridge 11 is disposed on a general road that is closed for traffic during construction, two erection bridges 11 are arranged on this general road 71 in close contact with each other such that the slope runway 25 b is on the outside. The general vehicle 72 can travel on the continuous traveling road 25 of the two bridges 11 instead of the general road 71 under construction.

In the mobile bridge device of the present embodiment, the bridge 11 and the carriage 12 can be separated from each other, and the plurality of bridges 11 are moved by the single carrier 12 to a predetermined position. Can be arranged. Therefore, by reducing the manufacturing cost of one unit, the use cost of a large number of bridges 11 can be reduced, the bridge 11 can be reduced in size and weight, and transport to a maintenance shop during regular maintenance is facilitated. Become. Further, when a dump truck 61 loaded with luggage travels on the erection bridge 11, since a large number of piers 21 support the load, a large load is applied to each traveling wheel 52 of the transport trolley 12. It does not work and this transport truck 12
Can be reduced in size and weight. Furthermore, the traveling path 25 of the bridge 11
Has a slope runway 25b on only one side,
By shortening the total length of the bridge 11, the bridge 11 can be easily used even in a place with a limited working space such as a harbor.

In the embodiment described above, the bridge 11
Although the boom 48, the arm 50, the lifting cylinder 55, and the like are provided in the traveling steering telescopic drive mechanism 32 as means for raising and lowering the vehicle, the invention is not limited thereto, and a plurality of lifting jacks may be provided on the gantry 31 of the transport vehicle 12.

[0024]

As described in detail in the above embodiment, according to the mobile bridge device of the present invention, the upper surface has a road surface on which vehicles and the like can pass and the lower portion has a space and a pedestal. And a bridge moving means that has a vertically movable bed, can move forward and backward, can traverse, and can enter the space of the bridge and contact the pedestal with the bridge. And the transport trolley can be separated, and a single transport trolley moves a plurality of bridges and arranges them at predetermined positions, thereby reducing the manufacturing cost of a single bridge and transport trolley to reduce the number of The use cost of the bridge can be reduced, the size and weight of the bridge can be reduced, and transportation to a maintenance shop during regular maintenance can be facilitated. In addition, since the bridge itself supports the load when a vehicle or the like travels on the bridge, a large load does not act on each traveling wheel of the carriage, and the size and weight of the carriage can be reduced. Can be planned.

Further, according to the mobile bridge device of the present invention, since the road surface on the top of the bridge is a one-sided slope, the total length of the bridge is short, and the bridge can be easily used even in a place where the working space is limited. And workability can be improved.

[Brief description of the drawings]

FIG. 1 is a front view of a mobile bridge device according to an embodiment of the present invention.

FIG. 2 is a side view of the mobile erection bridge device of the present embodiment.

FIG. 3 is a front view of a transport trolley of the mobile erection bridge device.

FIG. 4 is a side view of the transport vehicle.

FIG. 5 is a plan view of the transport vehicle.

FIG. 6 is a detailed view showing a traveling steering telescopic drive mechanism.

FIG. 7 is a front view illustrating an operation state of the traveling steering telescopic drive mechanism.

FIG. 8 is a front view illustrating an operation state of the mobile erection bridge device.

FIG. 9 is a side view illustrating an operation state of the mobile erection bridge device.

FIG. 10 is a schematic diagram of a case where the mobile erection bridge device of the present embodiment is arranged in a harbor.

FIG. 11 is a schematic diagram when the mobile erection bridge device of the present embodiment is arranged on a general road under construction.

FIG. 12 is a schematic view showing a general shipping operation.

FIG. 13 is a schematic view of a conventional mobile bridge.

[Explanation of symbols]

 REFERENCE SIGNS LIST 11 bridge erected 12 transport trolley (bridge moving means) 21 pier 22 pedestal 23 space section 25 travel path 25 a horizontal runway 25 b slope runway 31 gantry 32 traveling steering telescopic drive mechanism 33 cab 42 rotating body 43 driven gear 46 steering motor 47 drive gear 48 Boom 50 Arm 51 Axle 52 Traveling Wheel 54 Traveling Motor 55 Lifting Cylinder 56 Drive Rod

Claims (2)

[Claims] 1. An bridge having an upper surface having a road surface on which a vehicle or the like can pass and a space portion and a pedestal provided at a lower portion, and a loading platform capable of moving up and down, so that it can move forward and backward and can traverse. And a bridge moving means for invading a space portion of the bridge and allowing the loading platform to come into contact with the pedestal. 2. The mobile bridge device according to claim 1, wherein a road surface on an upper surface of the bridge is a single slope.