JP2673165B2 - Mobile scaffolding equipment for bridges - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a movable scaffolding apparatus for a bridge, which is movable while avoiding obstacles existing on the bridge.

[Conventional technology]

Conventionally, as this type of mobile scaffolding device for a bridge, for example, the upper chord member of the bridge is used as a track, and the running wheels capable of rolling or derailing on the track are inspected on the side surface and the bottom surface of the bridge. It has been proposed that the vehicle be installed on the inspection vehicle so that the traveling wheels can be stored outside the side of the bridge in case there is an obstacle on the upper chord member, and then the vehicle can be restored afterward (JP-A-57). -205602 reference).

In addition, this type of mobile scaffolding device for bridges is composed of a pair of unit scaffolds arranged side by side in a direction orthogonal to the bridge axis, and the unit scaffolds are fixed to both left and right sides of the bridge. Running parts, supporting parts provided from these running parts toward the outside in the width direction of the bridge, scaffold hanging parts hanging downward from the outer end parts of these supporting parts, and provided on the scaffold hanging parts. With a scaffolding frame has been proposed.

These mobile scaffolding devices for bridges can also be used for bridge inspections and other work while moving in the bridge axis direction on the bridges.

[Problems to be solved by the invention]

By the way, when there are tall facilities or obstacles on or near the bridge, such as lighting, the former device stores the traveling wheels outside the side of the bridge, and then configures them so that they can be restored after that. In order to avoid the obstacle by moving the object forward, or in the latter device, the supporting portions are installed at a constant interval and the arm is rotated before reaching the obstacle.

Therefore, the former device has a drawback that the mechanism for avoiding the obstacle is complicated, and the operation for avoiding the obstacle is complicated and complicated. In the case of the latter device, since the arm is rotated to avoid the obstacle, if there is another obstacle within the turning radius of the arm, the obstacle cannot be avoided or the bridge cannot be avoided. When there are obstacles at specific positions on both sides of the vehicle, it is impossible to avoid the obstacles.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned drawbacks and to provide a mobile scaffolding device for a bridge which can surely avoid obstacles with a simple structure.

[Means for solving the problem]

In order to achieve the above-mentioned object, the present invention provides a pair of running parts that are provided on both left and right sides of a bridge and are movable on the bridge, and support parts that are provided from these running parts toward the outside in the width direction of the bridge. In the movable scaffolding apparatus for a bridge, which comprises a scaffolding hanging portion hung downward from the outer end of these supporting portions, and a moving scaffolding provided at the lower end of the scaffolding hanging portion, each of the supporting portions is The traveling unit and the suspension of the scaffolding are connected to each other, and at least three beams arranged at predetermined intervals, and a movable mechanism capable of independently moving each of the beams in the width direction of the bridge. Is characterized by.

Here, each of the beams may be connected to the traveling portion and the scaffold suspension in the width direction of the bridge so as to be movable back and forth.

[Action]

The mobile scaffolding device for a bridge of the present invention moves the bridge to a necessary place by the traveling part, and when there is an obstacle on the bridge, moves the beam immediately before the obstacle in the width direction of the bridge by the moving mechanism. The obstacles on the bridge can be avoided by passing through the obstacles, returning the beams again after the passage is completed, and repeating this at least for the other two.

〔Example〕

 Hereinafter, the present invention will be described with reference to the illustrated embodiments.

1 to 6 are for explaining the configuration of an embodiment of the present invention, FIG. 1 is a configuration diagram showing an embodiment of a mobile scaffolding apparatus for bridges of the present invention, and FIG. 2 is the same. A plan view of the embodiment, FIG. 3 is a view taken along the line AA of FIG. 2, FIG. 4 is an enlarged view of a main part of FIG. 3, FIG. 5 is a detailed view of a supporting portion, and FIG. It is a block diagram of the connection tread part used in the same Example.

In these figures, the mobile scaffolding device 1 for bridges is provided on both left and right sides of the bridge 2, and a pair of traveling parts 3, 3 that can move on the bridge 2 and the traveling parts 3, 3 Bridge 2
Of the supporting parts 4, 4 provided outward in the width direction of the scaffold, and a scaffold hanging part hung downward from the outer end parts of these supporting parts 4, 4
5,5, comprising a moving scaffold 7,7 provided at the lower end 6,6 of the scaffold suspension 5,5, the support 4,4, the running portion 3,3 and the scaffold suspension 5, At least three beams 40a, 40b, 40c arranged at a predetermined interval that connect 5 with each other, and movable mechanisms 41a, 41b, which allow the beams 40a, 40b, 40c to move independently of the width method of the bridge 2.
It consists of 41c and.

As shown in FIG. 3, the traveling unit 3 has a bogie frame 9 having wheels 8 made of rubber or the like and provided at regular intervals in the bridge axis direction, and an end of the bogie frame 9 is provided. It has a drive device 10 for driving wheels 8 provided in the section.
The wheel 8 is configured so that a chain 13 is hooked on a sprocket 12 fixed to an axle and an output sprocket 11 of the drive unit 10, and is rotationally driven by the drive unit 10.

The support portion 4 includes beams 40a, 40b, 40c and these beams 40a, 40b, 40c.
It has movable mechanisms 41a, 41b, 41c capable of moving independently of each other. The movable mechanism 41 is configured as shown in FIG. That is, a manual winch 42 is provided on the scaffold hanging part 5, a chain 44 is wound around an output sprocket 43 of the winch 42, and an end portion of the chain 44 has auxiliary sprockets 45 and 46. Beam through 4
It is fixed to 0 fixing pieces 47 and 48, respectively. And beams
40 is movably fixed to the scaffold suspension 5 and is removably engaged with the upper portion U of the traveling unit 3.

The scaffold hanging part 5 is provided with a moving scaffold 7 under the supporting part 5 as shown in FIG.

The moving scaffold 7 is formed in an elongated rectangular shape by angles or channels, and a striped steel plate or the like is laid on the upper surface thereof. Then, the moving scaffold 7 has a structure in which, for example, when there is an obstacle on the side of the bridge 2, the movable scaffold 7 can expand and contract in the longitudinal direction thereof.

Reference numeral 20 is a handrail, 21a is a stairway for getting on the device from the bridge 2, 21b is a stairway for getting on the moving scaffolding 7 from the upper part of the device, and 22 is a control panel for controlling the drive device 10 o'clock.

Further, in FIG. 6, reference numeral 55 is a connecting tread plate, one end of which is rotatably fixed to the communication passage 57 of the traveling section 3 via a fulcrum 56, and the connecting tread plate 55 is also connected.
The other end of which is placed on the passage 58 of the support portion 5,
If necessary, the connecting step board 55 can be flipped up like a two-dot chain line in the figure.

Next, the operation of the above-described embodiment will be described below.

<Operation of moving scaffold> First, the drive device 10 of the traveling unit 3 is driven to drive the wheels 8, 8
The mobile scaffolding apparatus 1 for bridges is moved to a required place by rotating, and the elevating shaft (not shown) provided in the traveling units 3, 3 is moved up and down to move the scaffolds 7, 7 to the bridge 2.
Adjust and fix the height of.

Then, the other left and right moving scaffolds 7, 7 are driven by a winch (not shown) or the like to move to the center of the bridge 2,
After fitting the movable scaffolds 7 and 7, for example, bolts on both flanges are tightened to be connected. When moving the mobile scaffolding apparatus for bridge 1 between the bridge piers 50 of the bridge 2 in the bridge axis direction, the left and right moving scaffolds 7, 7 ... Can be moved in a connected state, but the moving direction ( If there is a bridge pier 50 (indicated by arrow X), the pair of left and right moving scaffolds 7,7 immediately before contacting the bridge pier 50 is opened, and then the bridge movable scaffolding device 1 is moved to avoid it. , Constant moving scaffolding again after avoidance
Fit 7,7. Since this is done, the mobile scaffolding device 1 for bridges can be moved without hitting the piers 50.

<Avoiding Operation of Illumination Lights (Obstacles)> Next, a case where the bridge movable scaffolding device 1 avoids the illumination lights 51 provided on the side portions of the bridge 2 will be described.

As shown in FIG. 2 and FIG. 4, normally, three beams 40a, 40b, 40 are provided between the running part 3 and the scaffold suspension 5 as a support part 4.
c is provided.

As shown in FIG. 9 (1), when the bridge movable scaffolding device 1 comes to the illuminating lamp 51 part, in order to avoid this, as shown in FIG. 7 and FIG. Drive the winch 42c to move 40c to the outside in the width direction of the bridge 2,
Move the beam 40c to the maximum position. After the beam 40c has moved to the maximum position, the movable scaffolding device for bridge 1 is moved by one pitch in the moving direction as shown in FIG. 9 (2),
The illumination lamp 51 is set to pass through the beam 40c portion (one pitch). When the vehicle is moved by one pitch in this way, the movable scaffolding apparatus 1 for bridge is stopped, and the winch is again moved.
The beam 42c is returned to the original position by driving 42c, and the running part 3 and the scaffold suspension 5 are connected.

Next, the beam 40 immediately before the certification light 51 is driven to the outside of the bridge 2 in the width direction by driving the winch 42b, and the beam 40b is moved to the maximum position. After the beam 40b has moved to the maximum position, the bridge movable scaffolding device 1 is moved by one pitch in the moving direction as shown in FIG.
To pass through the beam 40b (one pitch). When the mobile scaffolding device 1 for a bridge is stopped in this way, the winch 42b is driven again to return the beam 40b to the original position, and the running part 3 is connected to the scaffold suspension part 5. To do.

Further, the winch 42a is driven to move the beam 40a on the downstream side in the moving direction to the outer side in the width direction of the bridge 2, and the beam 40a is moved to the maximum position. After the beam 40a has moved to the maximum position, the bridge movable scaffolding device 1 is moved by one pitch in the movement direction as shown in FIG.
Make the 40a part (one pitch) normal.
When the moving state for one pit is reached in this way, the movable scaffolding apparatus for bridge 1 is stopped, the winch 42a is driven again to return the beam 40a to the original state, and the running section 3 and the scaffold suspension 5 are connected. To do.

Then, finally, as shown in FIGS. 9 (5) and 10, the connecting treads 55 are flipped up to make the bridge movable scaffolding device 1
Is moved in the movement direction X so that the illuminating lamp 51 passes through the connecting step plate 55. This lighting 51 is a tread
After passing through the portion 55, the illuminating lamp 51 can be avoided as shown in FIG. 9 (6) (two-dot chain line in FIG. 10) by returning the connecting step plate 55 to the original position.

As described above, the mobile scaffolding device 1 for a bridge of the present invention is an illumination lamp.
51 can be avoided.

In the above embodiment, the movable mechanisms 41a, 41b, 41c are constituted by the manual winches 42a, 42b, 42c, but the hydraulic motor,
It may be driven by a voltage motor, an internal combustion engine, or the like. Further, in the above embodiment, the number of the beams 40 is three, but it may be four or more. In the present embodiment, even if one beam 40 is moved to the retracted state as described above, the traveling unit 3 and the scaffold suspension 5 are always connected by at least the other two beams 40. Therefore, it is possible to ensure safety.

〔The invention's effect〕

As described above, since the mobile scaffolding device for a bridge according to the present invention avoids the obstacle on the bridge for each one of at least three beams, the obstacle can be easily removed. Therefore, it is possible to avoid the vehicle from traveling and to avoid obstacles for each beam, so that an excessive load is not applied to other beams.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of a mobile scaffolding device for a bridge of the present invention, FIG. 2 is a plan view of the same embodiment, FIG. 3 is a side view of a running part of the same embodiment, and FIG. The figure which shows the principal part of the traveling part and the support part, FIG. 5: The figure which shows the principal part of the support part of the same Example,
FIG. 6 is a block diagram of the same connecting tread portion, FIGS. 7 and 8 are views for explaining the operation of the support portion of the same embodiment, and FIGS. 9 (1) to (6) are of the same embodiment. Figure for explaining the operation,
FIG. 10 is a view for explaining the movable state of the connecting treads. 1 ... Mobile scaffolding device for bridge, 2 ... Bridge, 3 ... Traveling part, 4 ... Support part, 5 ... Scaffold suspension, 7 ... Moving scaffolding, 8 ... Wheels, 9 ... Bogie frame , 40a, 40b, 40c …… Beams, 4
1a, 41b, 41c …… Movable mechanism, 42a, 42b, 42c …… Winches, 4
4 …… Chain, 51 …… Lighting lamp (obstacle),

Claims (2)

(57) [Claims] 1. A pair of running parts which are provided on both left and right sides of the bridge and are movable on the bridge, support parts provided from these running parts toward the outside in the width direction of the bridge, and these supporting parts. In a mobile scaffolding apparatus for a bridge, which comprises a scaffold suspension suspended downward from an outer end and a moving scaffold provided at a lower end of the scaffold suspension, each of the support portions includes the running portion and the scaffold. A bridge characterized by comprising at least three beams connected to a suspension part and arranged at predetermined intervals, and a movable mechanism capable of independently moving the beams in the width direction of the bridge. Mobile scaffolding equipment. 2. The movable scaffolding device for a bridge according to claim 1, wherein the beams are connected to the traveling portion and the scaffold suspension in a width direction of the bridge so that the beams can move forward and backward.