JPS6335053Y2 - - Google Patents

Description

[Detailed Description of the Invention] Technical Field The present invention relates to a bridge inspection device for inspecting, repainting, maintaining and managing the back side of expressways, bridges, etc.

BACKGROUND ART As a conventional bridge inspection device, one is known in which a walkway spanning the entire width of each bridge is attached to the lower end of a bridge girder so that it can be moved along the bridge. However, with such a bridge, a large and heavy object must be lowered all the time, which places an unnecessary load on the bridge, which is not only undesirable but also uneconomical as it requires extra members and man-hours to manufacture. be.

Purpose of the invention The purpose of the invention is to provide a bridge inspection device that eliminates such drawbacks.

SUMMARY OF THE INVENTION Therefore, in the present invention, a hanger rail having a length of at least three bridge girders is attached to the bottom of either the bridge girder or the dedicated rail so that it can be moved in the longitudinal direction and the right angle direction. , is characterized by a walkway on which people can ride, movably attached along a hanger rail.

Configuration of the Embodiment Hereinafter, the present invention will be explained in more detail based on the illustrated embodiment. Although this embodiment shows the state in which it is used on an expressway, it goes without saying that the same applies to a bridge.

On the back side of the road bottom plate 1, there are a plurality of bridge girders 2, 2,
... are attached, and a hanger rail 4 is attached to the lower part of the bridge girders 2, 2... via hanging machines 3, 3. In addition, the beam 2 that goes directly to the bridge girders 2, 2...
If a, 2a, etc. impede the movement of the lifting machine 3, which will be described later, a special suspension rail 2' may be installed under the bridge girder 2 or beam 2a (the case of bridge girder 2 will be explained below). do).

In this embodiment, the hanger rail 4 connects the bridge girder 2 to 3
The length is set to be slightly longer than the length across the book, but it may be longer. As shown in FIG. 2, this hanger rail 4 has two side plates 4a of a predetermined length arranged in parallel, both ends of which are fixed with vertical plates 4b to form a square frame, and upper and lower rails 4c, 4c and the lower rails 4d, 4d on the side plate 4a.
It was installed along the The side plates 4a, the vertical plates 4b, and each of the rails 4c and 4d are made of aluminum shapes. The side plate 4a is provided with holes at regular intervals to reduce weight. The cross-sectional shape of each rail is a square shape as shown in the figure. The hoisting machine 3 is
As shown in FIG. 2, a platform 6 having a car 5 running on an upper rail 4c is slidably attached between the platforms 6 and 6 by a hinge 7, and is provided within the hinge 7. is pressed against the web of the bridge girder 2 by a spring (not shown),
The guide plate 8 serves as a guide for traveling along the bridge girder 2. At both ends of this guide plate 8 are wheels 10, 10 that run on the surface of a flange 9 at the lower end of the bridge girder. Two sets of guide plates 8 are provided before and after the platforms 6, 6, and the web of the bridge girder 2 is held between both guide plates 8, 8. Since the wheels 10 of both guide plates 8 are located on the flanges 9 of the bridge girder, it is possible by means of these wheels 10 to move the lifting machine 3, that is, the hanger rail 4, along the bridge girder 2. Moreover, since the wheels 5 of the platform 6 of the hanging machine 3 are placed in the upper and lower parallel plates of the upper rail 4c, which has a cross-sectional shape, the hanger rail 4 can also be moved in a direction perpendicular to the bridge girder 2. I can do it. The lower rail 4d of the hanger rail 4 has a walkway 11 where a person can enter and work.
It is attached so that it can be moved along the
The means for moving this walkway 11 is
A pair of cars 12 are placed on each of the four corners of the lower rail 4.
This is the moving tool 13 attached so as to sandwich d. The lower rail 4d has a cross-sectional shape similar to the upper rail 4c, and by sandwiching the central portion between two wheels 12, the wheels 12 can be mounted on the flange portions of the wheels 12 to allow running. The walkway 11 may have a considerable length as shown, but it may also be small enough for one or two people.

In this embodiment, the hanger rail 4 is always connected to the bridge girders 2, 2 by at least two lifting machines 3, 3.
..., and the ends are fixed with clamps 14, but they may also be attached with three hanging machines.

Although the bridge inspection device of this embodiment is always suspended between the bridge girders 2, 2, it may be possible to install the entire device from above or below the bridge when necessary. In that case, the hanger rail 4 can be disassembled into a side plate 4a, a vertical plate 4b, and upper and lower rails 4c and 4d.

Effects of the Embodiment In this embodiment, first, a crane or a ladder (not shown) on which an inspection worker can climb
Send it to corridor 11. Next, in order to move the place according to the inspection work, the walkway 11 can be moved along the lower rail 4d by the car 12, so that it can be placed at a desired position on the hanger rail 4. Furthermore, since the hanger rail 4 can be moved in a direction perpendicular to and parallel to the bridge girder 2 by the lifting machine 3, the work can be carried out while holding the walkway 11 at a desired position. When working, one end of the hanger rail 4 is fixed to the bridge girder 2 with a clamp 14 so that the hanger rail 4 does not move. When moving the hanger rail 4 along the bridge girder 2, it can be easily moved by the wheel 10 of the guide plate 8 by removing the clamp 14. On the other hand, when the hanger rail 4 is to be moved perpendicularly to the bridge girder 2, the hanger rail 4 is attached to the bridge girder using two hoisting devices 3, 3 and a clamp 14, as shown in FIG. After that, remove the clamp 14 and move the hanger rail 4 to the right side in the drawing, and when the right end reaches the next bridge girder 2, attach the clamp 14 to the right end of the hanger rail and that bridge girder 2, fix it, and move the hanger rail 4 on the left side. Remove 3 and bring it to the right side,
Then, the hoisting machine 3 is put into the hanger rail 4 again, and the bridge girder 2 is held between the guide plates 8. By repeating this process, the hanger rail 4 is moved in a direction perpendicular to the bridge girder 2. After completing the work, the worker returns the walkway 11 to the predetermined position, and then returns to the bridge or the ground using a ladder or the like.

In this embodiment, a clamp is used to fix the hanger rail, but a lifting machine having a brake means may be used instead of the clamp.

Effects of the invention As described above, according to the invention, a lightweight bridge inspection device can be constructed using a relatively short hanger rail and a small walkway, and unnecessary loads are not applied to the bridge. Furthermore, even with such a small-sized hanger rail, the hanger rail can be moved in a direction perpendicular to and parallel to the bridge girder, making it possible to inspect the entire back side of the bridge.

[Brief explanation of the drawing]

FIG. 1 is a front view of the embodiment of the present invention installed on a bridge, and FIG. 2 is a perspective view of the main parts of the embodiment of the present invention. 1: Bottom plate, 2: Bridge girder, 3: Hanging machine, 4: Hanger rail, 5: Car, 6: Platform, 7: Hinge, 8: Information board, 10: Car, 11: Walkway.

Claims (1)

[Scope of utility model registration request] a hanger rail having a length that can cross at least three bridge girders; a hanging machine that attaches the hanger rail to the lower part of either the bridge girder or the dedicated rail so as to be movable in the length direction of the bridge girder and in a direction perpendicular thereto; A bridge inspection device characterized by having a walkway attached below a hanger rail so as to be movable along the hanger rail.