JPS6363685B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a bridge inspection vehicle for long bridges, and more particularly to an inspection vehicle that runs on the underside of a bridge and is capable of maintaining and managing not only the underside of the bridge but also the inside of the bridge.

In general, it is common knowledge that long bridges such as crossing bridges are equipped with bridge inspection vehicles for inspecting the condition of the bridge, painting the bridge, and repairing the structure (hereinafter referred to as maintenance work). .

Conventionally, there are bridge inspection vehicles such as those shown in FIGS. 1 and 2, for example.

Figure 1 shows an example of the Kanmon Bridge in Japan, where a roadway 2 is formed on the top of the bridge 1, and a bridge inspection vehicle 3 runs in the longitudinal direction of the bridge along a track 4 laid on the underside of the bridge 1. Mounted as possible.

Maintenance work on the bridge 1 is then performed from above the bridge inspection vehicle 3.

However, with this type of bridge inspection vehicle 3, bridge inspection vehicle 1
There was an inconvenience that maintenance work could only be carried out on the underside of the bridge, and the inside of the bridge could not be reached.

Therefore, maintenance work will be carried out on the interior and sides of Bridge 1 using temporary scaffolding.
There was a problem in that the work efficiency was significantly reduced and there was a danger to the workers in strong winds.

In Fig. 2, a roadway 2 is formed inside the bridge 1.The roadway 2 is used to carry out internal maintenance work of the bridge 1 with a road inspection vehicle 5. The inspection vehicle 3 similar to that shown in FIG. 1 is used.

With this, bridge 1 during maintenance work
However, since it is necessary to arrange for a road inspection vehicle 5, it has the disadvantage that it is not quick to respond, is troublesome, and is expensive.

This invention was made by focusing on such conventional problems, and by providing an inspection vehicle that can travel on the underside of a bridge with a collapsible and swivelable telescoping boom equipped with a work cage at the tip, it is possible to carry out work easily. The purpose is to provide a bridge inspection vehicle with excellent performance and economy.

Embodiments of the present invention will be described below based on the drawings.

As shown in FIG. 3, a long bridge 12 connecting lands 11A and 11B across a strait 10 has been constructed, and a bridge inspection vehicle 14 for performing maintenance work on a bridge 13 of this long bridge 12 is installed at a bridge tower section 15. ,15
A predetermined number (four in the figure) are installed at the inspection vehicle mooring positions provided on the bridge abutments 16, 16.

As shown in FIGS. 4 and 5, this bridge inspection vehicle 14 has an inspection vehicle main body 17 formed in a substantially box shape that is long in the width direction of the bridge 13, and traveling device sections 18 provided at both ends thereof. It is possible to travel (self-propelled) in the longitudinal direction of the long bridge 12 along rails (tracks) 19 laid on the lower surfaces of both sides of the bridge 13 via the bridge.

A rail 20 is laid on the top surface of the inspection vehicle main body 17 along its longitudinal direction (width direction of the bridge 13), and a lifting device 21 movable on the rail 20 is provided.

This lifting device 21 is a scaffolding 2 installed on a bridge 13.
2, and is used for workers etc. to get on and off.

Furthermore, retractable telescoping booms 23 are provided at both ends of the inspection vehicle body 17 for internal maintenance work of the bridge 13.

In other words, this telescopic boom 23 is connected to the inspection vehicle main body 17.
A base 24 is provided to freely pivot (rotate) on the base 24, a lower boom cylinder 26 whose base end is foldably connected to the base 24 with a pin A via a tilting cylinder 25, and a lower boom cylinder 26 that extends and contracts with respect to the base 24 A lower telescopic boom 27, an upper boom cylinder 29 connected to the tip of the lower telescopic boom 27 with a pin B for folding freely via a tilting cylinder 28, an upper telescopic boom 30 that extends and contracts with respect to this, and this upper telescopic boom. A work cage 31 is attached to the tip of the boom 30 so that it is always held horizontally according to the tilting of the upper and lower telescopic booms 30 and 27.

During work, this telescopic boom 23 also moves the base 23 forward and backward and up and down by the telescopic and tilting operations of the lower telescopic booms 30 and 27.
4, the work cage 31 is set so that it can reach a predetermined range inside the bridge 13 in the left-right direction.

On the other hand, when retracting, the upper and lower telescopic booms 3
It is folded into a short length by the contraction and tilting operations of 0 and 27, and further aligned in the traveling direction of the bridge inspection vehicle 14 by the rotation of the base 24.

In the figure, 32 is a roadway formed on the top of the bridge 13, and 33 is a track laid inside the bridge 13, on which trains and the like run.

Because of this configuration, when performing maintenance work such as inspecting the condition of the bridge 13 of the long bridge 12, a worker first gets on the bridge inspection vehicle 14 at the aforementioned bridge inspection vehicle mooring position, and then moves the inspection vehicle 14 to a predetermined position. Move the vehicle until it reaches the desired position.

At this time, since the telescopic boom 23 and the work gauge 31 are stored as described above, stable running is possible with little running resistance.

After stopping the inspection vehicle 14 at a predetermined position, maintenance work is performed on the lower surface of the bridge 13 from above the inspection vehicle body 17 and from the scaffolding 22 of the bridge 13 via the lifting device 21.

On the other hand, inside the bridge 13, the work cage 31 may be extended to a predetermined position by appropriately operating the telescopic booms 23 provided at both ends of the inspection vehicle body 17. Of course, at this time, about two workers are inside the work cage 31.

As described above, this telescopic boom 26 can be tilted about connecting points (pins) A and B as fulcrums via the tilting cylinders 25 and 28 while the lower telescopic booms 30 and 27 extend and contract as necessary. can be,
Furthermore, since the base 24 is rotatable, the work cage 31 can be moved to any desired position while avoiding obstacles.

Therefore, by cooperating the two telescopic booms 23 from both ends of the inspection vehicle body 17, the bridge 13
Comprehensive internal maintenance work is possible.

When the maintenance work on the outside of the bridge 13 is completed in this way, the telescopic boom 23 is aligned in the traveling direction of the folding inspection vehicle 13 as described above, and then the inspection vehicle 13 is driven to inspect the bridge tower section 15.
Alternatively, after moving the inspection vehicle to the mooring position of the bridge abutment 16 and unloading the worker, etc., the inspection vehicle may be moored using a predetermined mooring means.

Since the telescopic boom 23 is attached to the inspection vehicle main body 17 in this way, there is no need to arrange for a road inspection vehicle 5 for high-altitude work as in the conventional case, and maintenance work can be quickly responded to and the work cost can be reduced. Finish. Furthermore, there is an advantage that work can be carried out safely because there is no need to work using scaffolding 22 or the like at a high place.

As explained above, according to the present invention, a retractable telescoping boom equipped with a work cage at the tip of the inspection vehicle that can travel on the underside of the bridge is attached, so that the entire inside and outside of the bridge can be covered. This makes maintenance work possible, significantly improving work efficiency, and eliminates the need for a road inspection vehicle, resulting in excellent responsiveness and economy.

[Brief explanation of drawings]

Figures 1 and 2 are sectional views of a long bridge equipped with a conventional inspection vehicle, Figure 3 is a front view of a long bridge equipped with an inspection vehicle of the present invention, and Figure 4 is an enlarged side sectional view thereof. , FIG. 5 is a plan view of the inspection vehicle. 13...Bridge, 19...Rail, 17...Inspection vehicle body, 12...Long bridge, 23...Telescopic boom,
31...Work cage, 14...Bridge inspection vehicle.

Claims (1)

[Claims] 1. An inspection vehicle body suspended so that it can run in the longitudinal direction of a long bridge along a track laid on the underside of the bridge,
A bridge inspection vehicle for long bridges, comprising a telescoping boom attached to at least one end of the inspection vehicle body so that it can be folded and rotated freely, and a work cage attached to the tip of the telescoping boom.