JPH0342090Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field This invention relates to an inspection device installed on a bridge.
In particular, the present invention relates to a bridge inspection device that enables wide-range inspection along the underside of a bridge body.

BACKGROUND OF THE INVENTION It has been proposed in the past to deploy a dedicated inspection vehicle to inspect structures including bridges. An example of such a conventional technique is Japanese Patent Application Laid-Open No. 58-33612. According to this publication, a technique is disclosed in which a traveling rail is provided, an inspection vehicle is moved along the traveling rail, and the inspection vehicle is reliably locked at a predetermined position so that required work can be performed.

For bridge inspections, a long inspection platform spanning the entire width of the bridge body can be moved longitudinally between the piers, or a relatively small inspection vehicle can be attached to multiple parallel rails arranged longitudinally at the bottom of the bridge body. Configurations for moving are known. As for a method of waiting and setting an inspection work vehicle in such a configuration, a method is known in which a bridge inspection vehicle is placed on the road and the inspection vehicle is set on a rail provided under the bridge body during work.

Problems with the Prior Art According to the configuration in which a long inspection platform that spans the entire width of the bridge body is moved in the longitudinal direction between the piers, the inspection platform becomes very large and has the drawback of requiring a large amount of moving power. Furthermore, movement control becomes complicated. Furthermore, the mounting structure becomes large, which increases the equipment cost and adds an extremely large weight to the bridge body as a whole. For this purpose, if the inspection vehicle is made smaller, the inspection range in the width direction of the bridge body by the inspection vehicle becomes smaller, so multiple inspection vehicles can be arranged in the width direction and each vehicle can move in the longitudinal direction of the bridge body. must be configured. For this reason, multiple inspection vehicles are required for wide bridge bodies, which increases equipment costs.

On the other hand, with the method of placing bridge inspection vehicles on the road and having them wait, it is necessary to temporarily restrict traffic on the bridge body during inspection work. It becomes difficult to set.

In any case, the prior art has not proposed a highly practical device that is simple to operate and have a simple structure, reduces equipment costs, and allows inspections to be carried out over a wide range of areas by efficiently using an inspection work vehicle. I wasn't there.

Purpose of the invention The purpose of the present invention is to solve the above-mentioned drawbacks, to have a simple structure, low equipment cost, and to be highly practical by allowing efficient inspection work to be carried out using a small inspection work vehicle. The purpose of the present invention is to provide a bridge inspection device with improved performance.

Summary of the invention In this invention, multiple pairs of rails are installed in the longitudinal direction of the bridge body at intervals in the width direction of the bridge body.
A small inspection vehicle was able to move laterally between these rails to easily change the rails, making it possible to efficiently inspect the entire area under the bridge body using a minimum number of inspection vehicles. .

More specifically, the bridge inspection device according to the present invention has the following features:
A plurality of pairs of parallel main rails arranged longitudinally at the bottom of the bridge body, a relocation work platform or mooring platform installed horizontally on the bridge abutment or pier, and a bridge body at the top of the relocation work platform or mooring platform. a guide rail that is removably attached to the lower part of the bridge body so as to be continuous with the main rail at a position above the relocation work platform or mooring platform; and an inspector. It is a small inspection work vehicle for a person to ride on, and has moving wheels that can be connected to and disengaged from the moving rail at the lower part, and a suspension on the upper part so that the inspection work vehicle can be moved with respect to the main rail or the guide rail. and a lowered position where the inspection work vehicle is movably supported by engaging the moving wheels on the moving rail, and positioned so as to be continuous with the main track. an inspection work vehicle equipped with a lifting means for raising and lowering the inspection work vehicle together with the guide rail between a raised position suspended by the guide rail; It is characterized by

A bridge inspection device according to a preferred embodiment of the present invention will be described in detail below with reference to the drawings.

Description of the structure of the illustrated embodiment FIG. 1 shows an example of a bridge equipped with an inspection device according to the present invention. This bridge has a structure in which one pier 2 is placed between a pair of abutments 1, and bridge bodies 3 are placed between them. As shown in FIG. 2, this bridge body 3 is composed of three girder members 4, 4, 4 parallel to each other along its width direction and a reinforcing beam 4' connecting these girder members.

According to the invention, the bridge body 3 has in its lower part, here below each girder member 4, a parallel main rail 5 extending in the longitudinal direction of the bridge body 3. Here, the main rails 5 provided on both sides of the lower part of each girder member 4 are combined with each other to form a pair. These main rails 5
is here assumed to be a member with an "I" shaped cross section.

(See Figures 3 and 6.) Also, as shown in Figure 1, on the side wall of the abutment 1 there is a work platform or mooring platform 6 that can be relocated to the lower position of the girder member 4.
is in place. Relocation workbench or mooring platform 6
are oriented in the width direction of the bridge body 3, and a pair of moving rails 6a (No. (see Figure 5) is installed. Although not shown in the drawings, these relocation work platforms or mooring platforms 6 are designed so that inspectors can get down from the upper part of the bridge body using a suitable ladder or the like.

In the present invention, as will be explained below, an inspection work vehicle 7 is usually placed on standby above one of the relocation work platforms 6 and used for work. Also the second
As shown in the figure, during the work, the inspection work vehicle 7 is suspended by a pair of main rails 5 as will be described later, and is moved in the longitudinal direction of the bridge body, and the rails are exchanged between the parallel main rails 5. be.

As shown in FIG. 3, this inspection work vehicle 7 has a long and small box shape, and has wheels 8, 8 for transportation at both ends of the lower part.
have. At least one of these moving wheels is connected to the chain 1 by a motor 9 with a reducer, for example.
It is a driving wheel that is driven through 0.
These moving wheels 8 engage with the moving rails 6a on the relocation work platform or mooring platform 6 when the inspection vehicle 7 is lowered, as shown in FIG. It is designed to be able to move in the width direction of 3. Further, as shown in FIGS. 3 and 4, both sides of the inspection work vehicle 7 are provided with lifting devices 11, 11, which here are hydraulic or mechanical actuating cylinder devices. The operating rods 11a of these lifting devices 11 are designed to be able to extend downward, and when they are extended, the lower ends of the operating rods come into contact with the relocation work platform or the mooring platform 6, and when they are further extended, Inspection work vehicle 7
The whole thing is ready to rise. Furthermore, this inspection work vehicle 7 is equipped with a pair of suspension moving parts 12 on the upper part. This suspended moving part 12 is connected to connecting rods 13 attached to both sides of the inspection work vehicle 7.
and are connected so as to suspend this connecting rod 13,
Main rail 5 (same for guide rail described later)
The carriage part 14 is configured to be movably suspended relative to the carriage part 14. Here, the bogie portion 14 sandwiches the main rail 5 having an "I" cross section from both sides, as shown in FIG. 6 (shown suspended from a guide rail 50 to be described later) The wheels 15, 15 are arranged opposite to each other, and these wheels 15, 1
5 is movable by riding on the lower wall 5' of the main rail 5, and is prevented from falling off in the lateral direction. Wheels 16, 16 are auxiliary wheels that come into contact with the lower surface of the main rail 5 to prevent vertical movement. Further, at least one truck portion 14 is equipped with a motor 17 as shown in FIG. 6, which drives the wheels 15 so that the entire inspection work vehicle 7 can be moved along the main rail 5. Further, the left and right truck portions 14, 14 are connected by a frame.

As a major feature of the present invention, as shown in FIG. 6, a guide rail 50 having the same cross-sectional shape as the main rail 5 is provided. This guide rail 50 is the main rail 5
It is arranged such that it can be removably fixed to the bridge body 3 (here, the girder member 4) by being positioned so as to be continuous with the bridge body 3 (here, the girder member 4). That is, the main rail 5 does not extend directly above the relocation workbench or the mooring platform 6, and the guide rail 50 is designed to replace this portion of the rail. In order to fix the main guide rail, here, as shown in FIGS. 4 and 6, holes 22 in the mounting plate 21 attached to the hanger beam 20 fixed to the bridge body 3 and the guide rail A structure is adopted in which the holes 24 of the mounting plate 23 fixed to the upper part of the mounting plate 50 are aligned with each other, and the pins 25 are inserted and fixed.

Description of the operation of the embodiment In the above-mentioned apparatus, the inspection work vehicle 7 is normally used for inspection and repainting work in an assembled state with the wheels 15 of the truck portion 14 engaged with the guide rail 50. . When not working, it is kept on standby on the moving rail 6a of the relocation workbench or mooring platform 6, or with the guiding rail 50 fixed to the bridge body 3.

During inspection work, if the inspection work vehicle 7 is waiting on the moving rail 6a together with the guide rail 50, first move the main rail 5 to any desired main rail 5 in the width direction of the bridge body.
Move it to the position. After positioning in this state, the lifting device 11 is operated to raise the inspection work vehicle 7 and the guide rail 50 together, and the guide rail 50 is attached and fixed to the mounting plate 21 of the hanger beam 20. In this state, the guide rail 50 is positioned so as to be continuous with the main rail 5.
For this purpose, it is preferable that the ends of the guide rail 50 and the main rail 5 that come into contact with each other be formed obliquely, and it is preferable that a guide plate 5'' for positioning be fixed to the upper end of one of the guide rails 50 and the main rail 5. (See Figure 6).

After that. The inspection work vehicle 7 is moved along the main rail 5 by energizing control of the motor 17, and inspection is performed while moving to the end thereof. In the embodiment shown in FIG. 1, after the inspection along one main rail 5 is completed,
The inspection work vehicle 7 is pulled back again to the position above the relocation work platform or mooring platform 6, and the lifting device 11 is activated.
is lowered, and then moved along the movement rail 6a to the next main rail 5 position, and the area around that main rail 5 is inspected again by the above-described operation.

Here, for example, as shown in FIG. 1, if there is a space 2' below the bridge body 3 at the center of the upper end of the pier 2 in which the inspection work vehicle 7 can move, the main rails 5 can be arranged continuously. In this case, both sides of pier 2 should be
Since the inspection can be performed using two inspection work vehicles 7, it becomes possible to inspect the entire bridge with one vehicle.

Effects of the invention According to the invention, a relatively small and lightweight inspection vehicle can be used to inspect, repair, and repair almost the entire underside of a bridge.
Painting, etc. can be performed reliably and safely. Moreover, the inspection vehicle can be used extremely efficiently, and equipment costs can be reduced.

[Brief explanation of the drawing]

FIG. 1 is a front view showing the entire bridge equipped with the bridge inspection device according to the present invention. Figure 2 is a cross-sectional view of the bridge in Figure 1. Figure 3 is an enlarged front view of the bridge inspection device according to the present invention. FIG. 4 is a cross-sectional view of the bridge inspection device according to the present invention. FIG. 5 is a schematic cross-sectional view showing the ascending and descending states of the inspection work vehicle in the bridge inspection device. FIG. 6 is a partially cutaway perspective view of the entire bridge inspection device according to the present invention. 1... Bridge abutment, 2... Pier, 3... Bridge body, 4... Girder member,
5... Main rail, 6... Relocation work platform or mooring platform, 6
a...Movement rail, 7...Inspection work vehicle, 8...Movement wheels, 9...Motor with reducer, 10...Chain, 11
...Lifting device, 11...A operation rod, 12...Suspension moving part, 13...Connection rod, 14...Dolly part, 15...Wheel, 16...Auxiliary wheel, 17...Motor, 20...Hanger beam, 21, 23...Mounting plate , 22, 24
...hole, 25...pin, 50...guide rail.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A plurality of pairs of parallel main rails arranged in the longitudinal direction at the bottom of the bridge body, a relocation work platform or mooring platform installed horizontally on the bridge abutment or pier, and the aforementioned relocation. A moving rail arranged in the width direction of the bridge body at the upper part of the work platform or mooring platform, and a removable rail attached to the lower part of the bridge body so as to be continuous with the main rail at a position above the relocation work platform or mooring platform. A small inspection work vehicle for an inspector to board, with a guide rail attached to the main rail or guide rail on the lower part, and a moving wheel that is connected to and detached from the moving rail on the lower part, and a guide rail attached to the main rail or the guide rail on the upper part. and a lowered position where the inspection vehicle is movably supported by engaging the transportation wheels on the transportation rail. , Inspection work comprising a lifting means for raising and lowering the inspection work vehicle together with the guide rail between a raised position suspended by the guide rail located so as to be continuous with the main rail. A bridge inspection device comprising: a vehicle; (2) The bridge inspection device according to claim 1, wherein the suspended moving wheels include drive wheels. (3) In the case where a space is formed in the center of the upper part of the bridge pier in which the inspection work vehicle can move, at least one of the main rails is arranged through this space. Device. (4) The guide rail is configured to be removably attached by aligning the hole formed in the mounting plate provided at the top with the hole formed in the mounting plate provided at the bottom of the bridge body and inserting a pin through it. A bridge inspection device according to claim 1 of the claimed utility model registration. (5) An operating cylinder in which the elevating means includes a cylinder provided on the inspection work vehicle and an operating rod oriented in the vertical direction so that its tip is brought into contact with the relocation work platform or mooring platform. A bridge inspection device according to claim 1 of the utility model registration claim. (6) a bogie portion in which the main rail and the guide rail have an “I”-shaped cross section, and the suspension moving portion pivotally supports wheels arranged opposite to each other on both sides of these rails;
The bridge inspection device according to claim 1, which is a registered utility model, and comprises a connecting rod attached to the lower part of the truck for suspending the inspection vehicle.