JPS62236998A - Bridge inspection repair device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a bridge inspection and repair device that can inspect and repair bridges at low cost and efficiently.

[Prior art]

Conventionally, when inspecting and repairing a bridge that does not have inspection and repair equipment, a special inspection vehicle is used from the bridge when the bridge cannot be used. There are problems such as the need to completely block off the bridge and the inspection range being restricted, and if suspended scaffolding is to be erected on the bridge, temporary scaffolding and removal work is difficult and the construction period is long. There was the problem of high costs.

On the other hand, if the bridge can be used, a special inspection vehicle is used from the bridge, but in this case, there are the same problems as when using a dedicated inspection vehicle from the bridge mentioned above. When setting up scaffolding, there are problems similar to those when setting up suspended scaffolding, as well as the problem of blocking traffic on the bridge.

[Purpose of the invention]

The present invention has been made to solve the above-mentioned conventional problems, and enables inspection and repair of bridges that do not have inspection and repair equipment safely and efficiently without blocking the bridge or traffic on the bridge. possible, and easy to put on and take off.
The purpose of this invention is to provide a bridge inspection and repair device that has low equipment cost.

[Structure of the invention]

In order to achieve the above object, the bridge inspection and repair device of the present invention is provided with a plurality of bogie support arms that can be supported at intervals between two or more members provided substantially parallel to the axial direction of the bridge, and , each bogie support frame to which these bogie support arms are rotatably and restorably attached, a bogie running drive device supported by these bogie support frames, and an inspection/repair trolley supported by the bogie running drive device; The present invention is characterized in that the plurality of bogie support frames are composed of movable frames whose relative positions with respect to the bogie running drive device can be changed, and fixed frames whose relative positions cannot be changed.

[Example] The present invention will be described in detail below with reference to the drawings. Fig. 1 is a front cross-sectional view of a bridge inspection and repair device according to Embodiment 1 of the present invention installed on an I-girder bridge, and Fig. -Figure A is A in Figure 1.
2-B is a plan sectional view taken along the line B-B in FIG. 1, and FIG. 3 is a side sectional view taken along the line B-B in FIG. 1.

As shown in Figure 1, this bridge inspection and repair device is designed to: It does not require any special equipment.

As shown in FIG. 1, FIG. 2-A, and FIG. 2-B, this device is a bogie running drive device 9 that supports an inspection/repair bogie 10, and a member for supporting the bogie running drive device 9. It is generally composed of a truck support arm 6, a truck support arm rotation restoring device 7, and a truck support frame 8.8'.

That is, a plurality of bogie support arms 6 are attached at intervals to the two main girder lower flanges 4, which are members provided substantially parallel to the bridge axis direction of this bridge, and these bogie support arms 6 A plurality of truck support frames 8,8' are provided, each of which is rotatably and restorably mounted via a truck support arm rotation restoring device 7.

Further, the bogie traveling drive device 9 is supported by the plurality of bogie support frames 8, 8', and an inspection and repair truck 10 supported by the bogie traveling drive device 9 is provided.

Furthermore, a bogie lateral movement device fll is installed at the connection portion between the inspection and repair trolley 10 and the bogie running drive device 9, so that the bogie running drive device 9 not only supports the inspection and repair trolley 10 but also supports the inspection and repair trolley 1. It has the role of making the bridge movable in the lateral direction, that is, in the direction perpendicular to the bridge axis, and as a result, it can respond to changes in the girder spacing of the bridge.

The bogie support frame 8, 8' in the figure is the bogie running drive device 9.
A fixed type, indicated by 8' in the figure, whose relative position cannot be changed, and a movable type, indicated by 8 in the figure, whose relative position can be changed, are arranged alternately, and are indicated by diagonal lines in Figure 2-A. The opening 12 is provided to enable the carriage support frame 8 to move.

Next, the mechanism for traveling the inspection/repair trolley 10 will be explained with reference to Figures 4-A to 4-F. Only the mechanism is schematically shown.

First, the outline will be explained with reference to FIG. 4-A. The bogie support frame 8' is fixed to the bogie travel drive device 9, and the bogie moves on an elliptical track indicated by the broken line 13 in the figure by the bogie travel drive device 9. Support frames 8 are arranged alternately, and the truck support frames 8 are integrated with a connecting rod 16.

A bogie support arm 6 which obtains a bogie supporting force from the main girder lower flange 4 is connected to the bogie support frame 8.8' by a bogie support arm rotation restoring device 7.

Note that Fig. 4-A shows a state when the inspection/repair cart 10, in which the cart support frame 8 takes a counterclockwise oval orbit, moves to the left, and Fig. 4-A shows the moving cart support frame. The reaction force of the inspection and repair trolley 10 is applied to the chair 8,
A fixed truck support frame 8' is shown supporting the inspection and repair truck 10.

Next, FIG. 4-B shows a state in which the truck support frame 8 has moved close to the truck support frame 8', although the force relationship that acts is the same as that in FIG. 4-A.

Moreover, FIG. 4-C shows a state in which the moving trolley support frame 8 moves downward on an arcuate trajectory to slightly lift the trolley travel drive device 9, that is, it supports the inspection and repair trolley 10. The trolley support frame 8' is raised together with the inspection/repair trolley 10, and the load of the inspection/repair trolley 10 is smoothly transferred from the trolley support frame 8' to the trolley support frame 8.

Therefore, the truck support arm 6 connected to the truck support frame 8' is in a free state.

Next, in FIG. 4-D, the moving truck support frame 8 is
The oval track 13 supports the load of the inspection and repair trolley 10.
The inspection and repair trolley 10 moves to the left on the lower straight part of the vehicle to the right.

Furthermore, in Fig. 4-E, as the moving cart support frame 8 moves upward along the arcuate trajectory, the inspection/repair cart 10 is slightly lowered, and the load of the inspection/repair cart 10 is fixed to the cart itself. The load is applied to the truck support frame 8'.

At the same time, the truck load applied to the moving truck support frame 8 is removed, and the state returns to the state shown in FIG. 4-A.

By repeating the cycle shown in Figures 4-A to 4-E as described above, the inspection/repair trolley 10 moves smoothly to the left, but on the other hand, if this cycle is operated in reverse, it moves to the right. .

The state shown in Fig. 4-F shows the state when the inspection/repair trolley 10 is stopped and work is carried out, and the moving trolley support frame 8 and the fixed trolley support frame 8' are supported. The height of the arm 6 is set at the same level as that of the arm 6, so that the inspection/repair trolley 10 is kept in a more stable state.

Next, FIG. 5 shows the relationship between the bogie support arm 6, the bogie support arm rotation restoring device 7, and the bogie support frame 8°8'. The mechanism for passing through will be explained below.

First, as shown in FIG. 5, the truck support arm 6 can rotate around the truck support arm rotation restoring device 7, and the load support point of the truck support arm 6 moves along a rotation trajectory shown at 14 in the figure.

When passing through the vertical stiffener 5, the vertical stiffener 5
The trolley support arm 6 which rotated in contact with the trolley support arm rotation restoration device 7 returns to the home position line 15 in the figure.
In this state, the truck support frame 8.8' continues to advance.

Further, FIG. 6 shows an embodiment of the elliptical motion mechanism of the moving truck support frame 8, which engages with the drive rack 19 by rotating 18 drive gears provided at the lower end of the truck support frame 8. The fulcrum portion 17 of the truck support frame 8 moves in an ellipse along the axis track groove 20 in the figure, and this movement causes the repair truck 10 to advance as described above.

FIG. 7 shows a case where the bridge inspection and repair device according to the second embodiment of the present invention is applied to a box girder bridge, and the same parts as in the first embodiment are indicated by the same part numbers. A method is adopted in which the reaction force of the bogie load is applied to the two wall railings 21, and even if there is an obstacle such as a lighting ball on the wall railing 21, the bogie support arm 6 can pass through as explained in the first embodiment. The inspection and repair trolley 10 can be moved forward.

Further, in the case of this second embodiment, the bogie running drive device 9 is provided with wheels 22 that maintain a distance from the wall railing 21.

In the bridge inspection and repair apparatus of the present invention, the mechanism for changing the relative position of 8 of the plurality of bogie support frames 8 and 8' with respect to the bogie running drive device 9 is as shown in each of the above embodiments. The mechanism is not limited to this, and any mechanism and means may be used.

Further, the arrangement of the movable truck support frame 8 whose relative position can be changed and the fixed truck support frame 8' whose relative position cannot be changed is not limited to the alternate arrangement as in the above embodiment. , the above-mentioned truck support frame 8
, 8' may be arranged alternately, or other arrangements may be adopted.

〔Effect of the invention〕

As explained above, if the bridge inspection and repair device of the present invention is adopted, there is no need to block traffic on the bridge or on the bridge.
Moreover, the device can be easily attached and detached in a short period of time, and the device can be moved easily and has the advantage of high work efficiency.

Furthermore, the device of the present invention can be easily applied to bridges of various shapes such as changes in girder spacing, and even other structures, and furthermore, the device can be moved by the operator himself. It has the advantage of being safe, shortening the work period, and reducing work costs.

Furthermore, the apparatus of the present invention can be easily applied to existing bridges that do not have dedicated equipment for inspection and repair, and can perform inspection and repair work safely and efficiently.

For the Samurai, the device of the present invention does not require special equipment such as rails to install the device on the target bridge, etc.
It has the advantage of having a wide range of applications because it can be easily attached to the lower part of the existing main girder or wall railing, etc., and also has the advantage of requiring less preparation work before installing the inspection and repair trolley.

In addition, a vertical stiffener is installed at the bottom of the main girder of the commonly used 111 beam.
Even if there are obstacles such as, the trolley support arm can be rotated and restored, so the trolley for inspection and repair can be moved forward, which has the advantage of having a wide range of applications.

[Brief explanation of drawings]

FIG. 1 is a front sectional view of a bridge inspection and repair device in Embodiment 1 of the present invention, FIG. 2-A is a plane sectional view taken along the A-A direction in FIG. 3 is a side sectional view of FIG. 1, and 4-A to 4-F are a series of explanatory views showing the traveling mechanism of the bridge inspection and repair device shown in FIG. 1. , FIG. 5 is an explanatory diagram of the operation of the trolley support arm of FIG. 1, FIG. 6 is a perspective view of the main part showing the fulcrum drive mechanism of the movable trolley support frame of FIG. 1, and FIG. FIG. 3 is a front cross-sectional view of the bridge inspection and repair device in Example 2. 4... Main girder lower flange, 6... Bogie support arm, 7
... Bogie support arm rotation restoration device, 8... Bogie support frame (movable type), 8'... Bogie support frame (fixed type), 9... Bogie travel drive device, 1o... Inspection and repair Trolley, 21... Wall railing.

Claims (1)

[Claims] Each bogie is equipped with a plurality of bogie support arms that can be supported at intervals by two or more members provided substantially parallel to the axial direction of the bridge, and each of these bogie support arms is attached so as to be rotatable and restorable. supporting frame,
A bogie travel drive device supported by these bogie support frames and an inspection/repair trolley supported by the bogie travel drive device are provided, and the plurality of bogie support frames are movable to change their relative positions with the bogie travel drive device. Bridge inspection and repair equipment consists of a type type and a fixed type type whose relative position cannot be changed.