JPH0441205B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a scaffolding device for inspecting painted surfaces of bridges and inspecting and repairing welding cracks.

Conventional Equipment Conventionally, when inspecting or repairing the painted surface of a bridge, it is common for temporary scaffolding to be built at the target area, and workers perform the repair painting work on the scaffold.

In addition, inspection vehicles such as the one shown in Fig. 6 are commercially available mainly for small bridges and road bridges. In the device shown in Figure 6, the chassis of the truck mount (vehicle)
2' is lifted from the ground with an outrigger 5' to ensure stability, and a turntable 3' is mounted on the chassis 2' with a swing bearing 4', and a link type telescopic boom 6' that rises and falls from there is combined. The work scaffold 9' attached to the tip of the bridge is made to approach mainly the back side of the bridge.

Problems to be Solved by the Invention In the conventional method of constructing temporary scaffolding, it requires a great deal of time and effort to disassemble and reassemble the scaffolding each time, resulting in low efficiency and high cost. In this case, there was a safety issue.

Furthermore, when using the device shown in Fig. 6, (a) the inspection vehicle itself supporting the scaffolding 9' occupies the edge of the road with its outriggers 5' extended during inspection work, causing traffic obstruction; (b) the scaffolding ( (c) Normally, both the boom 6' and the scaffolding 9' have a cantilevered structure, and large cross-section members are required for strength reasons. ,
In addition, there were other problems such as large swings due to the dynamic load at the tip, which hindered work and was dangerous.

Measures to solve the problem An inspection and repair system is constructed from a vehicle equipped with a device that can load and transport the scaffolding and at the same time move the scaffolding onto the bridge, and a scaffolding that can be fixed or moved on the bridge.

Operation A moving vehicle transports the scaffolding to a designated location on the bridge,
The scaffolding is separated from the vehicle and placed on the rails installed on the bridge girder, and the bridge is inspected and repaired while the scaffolding is moved.

Embodiment In FIGS. 1 to 5, a turntable 3 is rotatably attached to a vehicle 2 which can move on a railway track 1 by means of a slewing bearing 4. A boom 6 is attached to a fulcrum 3' on a turntable 3 so as to be able to rise and fall freely using a hoisting cylinder 7. As shown in FIG. 3, at the tip of the boom 6, a rotating pin 32 connects a fixed table 17 via a bracket 31, and a cylinder 33 connects the boom 6 and the fixed table 17.

A thrust bearing 22 is installed inside the fixed table 17.
24 Rotary table 29 via radial bearing 23
support.

On the rotary table 29, the dog jack 19
As a result, a plurality of dogs 20 are installed in the corresponding holes 21 of the self-propelled scaffolding 9 so that they can be moved in and out.

18 is a rotary connection shaft fixed to the lower surface of the rotary table 29;
The hole 21 constitutes a gripping mechanism for the self-propelled scaffold 9.

The fixed table 17 and the rotary table 29 are mounted on a bracket 27 on the fixed table 17 side as shown in FIG.
A rotation cylinder 25 connected between the bracket 26 on the rotary table 29 side and the rotary table 29 allows relative rotational movement through a predetermined angle.

In FIG. 1, the self-propelled scaffold 9 has a frame 10,
It is composed of one set of horizontal telescopic frames 11 on the left and right, traveling wheels 16 with 124 telescopic cylinders, handrails 14, and the like.

The vehicle 2 is equipped with outriggers 5 for ensuring stability. Reference numeral 8 indicates the boom 6 and a fixing support base, 8' indicates a support base for fixing the self-propelled scaffolding, and 15 indicates a power unit.

Next, how to use this device will be explained with reference to FIG.

A vehicle 2 is transported onto a railway track 1 on a bridge 30, and an outrigger 5 is extended to fix the vehicle 2.

The vehicle 2 is in a state in which a self-propelled scaffolding 9 is mounted on it via a boom 6. Rotate the turntable 3 by 90 degrees and shift the self-propelled scaffold 9 from position a to position b - operation (FIG. 5c).

At this time, in order to move the self-propelled scaffold 9 in parallel, the rotary table 29 is rotated relative to the fixed table 17 by the rotation cylinder 25 simultaneously with the rotation of the turntable 3.

Next, the boom 6 is lifted by the luffing cylinder 7,
Operation to move the self-propelled scaffolding 9 from position b to position c above the bridge (Fig. 5b).

At this time, cylinder 1 is used to keep self-propelled scaffolding 9 horizontal.
At step 6, the horizontality of the fixed table 17 is adjusted at the same time.

Next, extend the telescopic frame 11 from the fixed frame 10 so that the wheels 16 of the self-propelled scaffolding 9 are placed on the self-propelled scaffolding rails 28 that have been attached to the bridge 30 in advance,
Place the self-propelled scaffolding on the rail 28 on the bridge side at position c - Operation (Figure 5 A).

After confirming that the self-propelled scaffold 9 is completely placed on the rail 28, the dog cylinder 19 is retracted and the dog 20 is pulled out from the hole 21 of the self-propelled scaffold.

By this operation, the self-propelled scaffolding 9 and the rotary table 29 are separated.

After this, the self-propelled scaffolding 9 can freely move in the direction of the arrow in FIG.

After the self-propelled scaffolding 9 is moved onto the scaffolding rail 28 of the bridge 30, the vehicle 2 is no longer needed and is removed.

In addition, it can also be used by simply approaching the member without separating the scaffold.

Effects of the Invention The bridge inspection and repair support device according to the present invention has the following features:
It consists of a vehicle with a boom capable of turning and raising and lowering installed on the upper surface of the vehicle body, and a self-propelled scaffold that has running wheels at both ends and whose center lower surface is removably supported by the boom, and the self-propelled scaffold has running wheels. A retractable mechanism is provided to adjust the interval between the self-propelled scaffolding and the boom, and a gripping mechanism that is detachable and a mechanism that rotates and tilts the gripping mechanism is provided at the connecting portion of the self-propelled scaffold and the boom, and the vehicle travels under the structure of a bridge or the like. Lift the self-propelled scaffolding in place,
After placing the running wheels of the self-propelled scaffold on the self-propelled scaffold rail installed on the top of a structure such as a bridge, and separating the vehicle from the self-propelled scaffold, inspection and repair are carried out while moving the self-propelled scaffold. By performing the work, etc., the following effects are obtained.

Quickly and easily install strong scaffolding on bridges,
It can be removed by following the reverse procedure, contributing to speeding up inspection and repair work on bridge components, reducing costs, and improving safety.

Furthermore, by manufacturing various types of scaffolding 9 according to the dimensions and specifications of the bridge, the same base machine can be applied to various bridges.

In addition, the boom 6 and the self-propelled scaffold gripping mechanism 19 -
Since the scaffold 21 is rotatable, the self-propelled scaffold 9 can be easily transported and set at a predetermined position.

Therefore, all unstable work at high places can be remotely controlled and automated.

[Brief explanation of drawings]

Figure 1 is a front view of an embodiment of the bridge inspection and repair support device of the present invention, Figure 2 is a plan view of the same as above, Figure 3 is a detailed view of section A in Figure 1, and Figure 4 is Figure 3. B-B
5A is a front view showing the device of the present invention in operation, FIG. 5B is a side view of the same, FIG. 5C is a plan view of the same, and FIG. 6 is a perspective view of the conventional device. It is a diagram. 2...Vehicle, 3...Turntable, 6...Boom,
7... Cylinder, 9... Self-propelled scaffold, 16... Traveling wheel,
28... Rail for self-propelled scaffolding, 30... Bridge.

Claims (1)

[Claims] 1 Consists of a vehicle with a boom capable of turning and raising and lowering installed on the top of the vehicle body, and a self-propelled scaffold that has running wheels at both ends and whose center lower surface is removably supported by the boom, and a vehicle that runs on the self-propelled scaffold. A telescoping mechanism for adjusting the interval between wheels is provided, a gripping mechanism that can be attached and detached to the connecting portion of the self-propelled scaffold and the boom, and a mechanism for rotating and tilting the gripping mechanism is provided, and the vehicle runs under a structure such as a bridge. Then, lift the self-propelled scaffold at a predetermined position, place the running wheels of the self-propelled scaffold on the self-propelled scaffold rail installed on the top of a structure such as a bridge, and separate the vehicle from the self-propelled scaffold. A device for supporting inspection and repair of bridges, etc., characterized in that inspection, repair, etc. are performed while moving self-propelled scaffolding.