JPS626006A - Working vehicle for repairing bridge and its construction - 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] [Industrial Application Field] The present invention relates to an I-beam repair work vehicle that is suspended from a bridge girder of a long bridge to perform inspection, maintenance work, and painting work, and a method for constructing the same. It is.

[Prior Art] As bridges have recently become larger and longer, as is known from the Honshu-Shikoku Connecting Bridge, the amount of work and dangerous work involved has increased, so painting work on large, movable (mobile ) It has become necessary to use work vehicles more safely and in a shorter time.

However, the only conventional bridge work vehicles available are small hanging inspection vehicles, which are no longer able to handle larger and longer bridges.

[Problems to be solved by the invention] In other words, since the conventional work vehicle is small, it was possible to install it using a crane or the like to lower it from the top of the beam to the bottom surface of the bridge girder. Work vehicles cannot adopt this method.

On the other hand, it is conceivable to erect a large construction vehicle by constructing scaffolding from the seabed or under water below the bridge, but since the lower surface of the bridge girder is located at an extremely high place, it would require a huge amount of cost and construction time, and it would also be difficult for ships to navigate. There were many difficulties and shortcomings in safety measures during typhoons, etc., and it was impossible to realize.

The present invention aims to eliminate such difficulties and drawbacks and provide a repair work vehicle that can be easily erected from Bridge-F and a method for erecting the same.

[Means for solving the problems] The present invention provides a side girder material that is suspended from the width end of a bridge girder portion of a bridge via a traveling device and moved in the bridge axis direction, and a The present invention is characterized in that it is provided with left and right working vehicle structural units each consisting of a rotatably attached lower surface beam member, and both of the supporting members are each provided with a working scaffold.

[Function] Therefore, the left and right work vehicle constituent units are suspended from the side of the bridge with both phase members folded vertically, the lower girder members are then rotated to a horizontal position, and then both sides are folded vertically. Rotate the companion material in the horizontal direction so that the traveling device engages the width end of the bridge girder section, and position the tip of the lower girder material at the center of the lower surface of the bridge girder section, and then move the lower surface of both units. By connecting the girders, the work vehicle can be erected in a short time.

"Example" Hereinafter, the present invention will be described in detail with reference to the drawings.

In FIGS. 1 and 2, 1 is a two-stage bridge with the upper stage being a motorway and the lower stage being a railway; 2 is the lower bridge girder of the bridge 1; It is used by being movably suspended between the ends.

The working vehicle of the present invention has a pair of left and right working vehicle constituent units 3L.
, consists of 3R, each unit 31.3R is bridge 1
It has a side girder material 4 for inspecting and repairing the side surface of the bridge girder 2, and a lower surface girder material 5 for inspecting and repairing the lower surface of the bridge girder 2. .

The side girder 4 is provided with a traveling device 7 at its lower inner position that can run on a guide rail 6 laid in the longitudinal direction (I-axis direction) on the width end of the bridge girder 2. Further, the upper part of the side girder 4 has a parallel link groove that can be tilted outward by the expansion and contraction of the cylinder 26 so as not to interfere with the hanger portions 8 that protrude left and right of the bridge 1 when the bridge 1 is running. Furthermore, scaffolding 9 for work is provided at a required interval in the vertical direction of the side girder 4.
A staircase 10 and the like connecting the scaffolds 9 and 9 are provided.

On the other hand, the lower surface beam member 5 has a hinge 11 at the lower end of the side surface beam member 4 so that it is in a state from parallel to perpendicular to the side surface beam material 4.
A floor plate forming a scaffolding 15 is laid on the upper surface when the two are connected to each other so as to be rotatable. Further, the apex portion of a right-angled triangular connecting column member 12 is attached to the hinge 11, and between the column member 12 and each of the girder members 4.5, the lower surface girder member 5 is rotatable. Hydraulic cylinders 13,14 for stirring are installed.

1 and 2, reference numeral 16 indicates a dedicated crane used when constructing the work vehicle of the present invention. A sliding gate-shaped girder 17 and a flake body 1 that can move along a rail 18 provided on the girder 17.
It consists of 9. The crane main body 19 includes a traveling body 20, an L-shaped rotating frame 21 rotatably mounted on the traveling body 20, a parallel link arm 22 provided on the upper part of the rotating frame 21 so as to be able to rise and fall, and Arm 2
A horizontal rotation device 23 provided at the tip of 2, and the rotation device @
It consists of a girder support 24 provided at the lower part of the spar 23.

When erecting a work vehicle using the dedicated crane 16 configured as described above, the dedicated crane 16 is brought in advance from the nearest storage location and fixed at the installation position. next,
As shown in FIG. 2, the girder 4,
5 are folded in parallel and the ends on the opposite side of the hinge 11 are connected, and the unit, for example 3L, is transported to the side of the dedicated crane 16. Then, the support 2 of the crane main body 19
4 and the opposite end of the hinge 11 of the beam member 4, and connect the arm 22
The girders 4 and 5 are lifted up in the vertical direction by standing up and rotating the girders 4 and 5 upward. In addition, 27 is an auxiliary trolley at the time of lifting. Next, the swing frame 21 is rotated to position the girder members 4 and 5 above the side portion of the Ia beam 1, and at that position, the arm 22 is further rotated downward to move the girder members 4 and 5 to the side of the bridge 1. Hang it towards the side. Incidentally, the turning and raising and lowering (rotation) of the crane main body 19 are all performed by hydraulic or electric methods.

When the girder members 4 and 5 are lowered to the sides of the bridge 1, the folded girder members 4 and 5 are uncoupled and the girder members 5 are placed at right angles to the girder members 4, that is, the girder members 5 are placed horizontally. Rotate and displace it so that This rotation of the beam 5 is effected by contracting the cylinders 13,14.

Thereafter, the rotating device 23 of the crane body 19 is driven to rotate the girders 4 and 5 so that the girder 5 enters the lower surface of the bridge girder 2, and the tip of the girder 5 is temporarily fixed to the center of the bridge girder 2. At this time, the vertical position of the girder 4 is also adjusted so that the traveling device 7 below the girder 4 rides on the guide rail 6 of the bridge girder 2.

After the unit 3L has been erected in this way, the support 24 and the girder 4 are disconnected, the crane main body 19 is moved to the opposite side in the width direction of the bridge 1, and the unit 3R is installed in the same manner as above. 3.Erect it so that it faces [. After that, all the opposing girder members 5, 5 are connected as appropriate, and the temporary fixing is released.

Therefore, the work vehicle consisting of the erected units 3L and 3R is inspected and repaired on the side using the scaffolding 9 of the girder 4, and the underside is inspected using the scaffolding 15 of the girder 5. , repair work will be carried out. Movement of the work vehicle in the bridge axis direction is performed by a traveling gear @7 provided at the bottom of the girder 4. Also, when the work vehicle passes through the hanger part 8 of the bridge 1, the cylinder 2
6 is contracted so that the upper part of the beam member 4 is tilted outward.

When dismantling the work vehicle, the above-mentioned erection procedure may be reversed.

In the above embodiment, a dedicated crane 1 is used to erect the work vehicle.
6, but a normal rope crane may also be used. Further, in the above embodiment, the working vehicle was constructed from a pair of units 3L and 3R, but as shown by the two-dot chain line in FIG. Alternatively, the work space may be expanded.

Furthermore, although not particularly shown in the drawings, the embodiment of the present invention is naturally equipped with a mechanism for preventing the traveling device 7 from coming off the guide rail 6, a fixing device during holidays, and the like.

[Effect of the invention].

As explained above, according to the present invention, scaffolding can be constructed on the underside and side of the bridge at the same time, and the installation work for floorboards, etc. is pre-assembled, so there is no need to assemble large-scale construction scaffolding from the seabed or underwater bed. It can achieve excellent effects such as being able to construct a bridge that has become larger or longer in a short time, and ensuring work safety.

[Brief explanation of drawings]

FIG. 1 is a schematic front view showing the construction state of the working vehicle of the present invention;
FIG. 2 is a side view of FIG. 1. 1 is the bridge, 2 is the bridge girder, 3L and 3R are the work vehicle component units, 4 is the side girder material, 5 is the bottom girder material, 7 is the traveling device,
9 is a scaffold, 11 is a hinge, 13.14 is a cylinder, 15
16 indicates a scaffold, and 16 indicates a dedicated crane.

Claims (1)

[Scope of Claims] 1) A side girder material that is suspended from the width end of a bridge girder portion of a bridge via a traveling device and moved in the bridge axis direction, and is rotatably attached to the lower end of the side girder material. 1. A work vehicle for repairing a bridge, comprising left and right work vehicle constituent units comprising a lower surface girder material, and each of the girder materials is provided with a work scaffold. 2) A side girder equipped with a working scaffold that is suspended from the width end of the bridge girder part via a traveling device and moved in the bridge axis direction, and rotatably attached to the lower end of the side girder. The left and right work vehicle component units, each consisting of a bottom girder with a working scaffold, are hung from the side of the bridge with both girders folded vertically, and then the bottom girder is folded horizontally. Then, both girders are turned horizontally so that the traveling device engages the width end of the bridge girder and the tip of the lower girder is positioned at the center of the lower surface of the bridge girder. A method for constructing a work vehicle for repairing a bridge, characterized in that the lower girder members of both units are connected after that.