JPS621911A - 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] [Field of Industrial Application] The present invention relates to a repair work vehicle for bridges, etc., which is suspended from the underside of bridge girder parts, mainly for long m-beams, suspension bridges, etc., for inspection, maintenance work, and painting work. This relates to the method of constructing the bridge.

``Conventional technology'' 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 in painting them has increased, so large movable (mobile) ) There is an increasing need to use work vehicles to do this safely and in a short time.

However, conventional underside work vehicles for bridges are limited to small hanging inspection vehicles, and these vehicles are no longer able to handle larger and longer bridges.

[Problems to be solved by the invention] In other words, since conventional work vehicles are small, it was possible to use a crane or the like to suspend them from the top of the bridge to the bottom of the bridge girder (q1), but for large-scale work Cars cannot use this method.

On the other hand, it is conceivable to erect a large construction vehicle using scaffolding from the seabed or water bottom below the bridge, but since the lower surface of the bridge girder is extremely high, it would require a huge amount of cost and time, and it would also be difficult for ships to navigate. The above problems and the safety measures during typhoons were the same, and there were many shortcomings, making it impossible to implement.

The present invention aims to solve the above problems and provide a repair work vehicle that can be easily erected from a bridge and a method for erecting the same.

[Means for Solving the Problems] In the present invention, one running frame is movably suspended and supported at one width end of a bridge girder portion of a bridge, etc., and a rotating frame is provided at the bottom of the one running frame. A slide case attached to the slide case, a main girder material slidably inserted into the slide case, and a main girder material rotatably attached to one end of the main girder material (=j) and the other traveling frame which is movably suspended and supported by the other width end of the bridge girder part after the construction of the work vehicle, and has a floor plate disposed on the main girder material. .

[Operation] With the main girder material fixed vertically, one of the running frames is suspended so as to engage one width end of the bridge girder section, and then the main girder material is horizontally moved by rotating the slide case. Then, the main girder member is slid so that the other running frame approaches the other width end of the bridge girder part, and the other running frame is then vertically rotated. The work vehicle can be erected in a short time by moving the bridge girder and suspending it from the other width end of the bridge girder, and then placing the floorboard on the main girder.

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

In FIGS. 1 to 3, reference numeral 1 indicates, as an example of a beam, a two-stage bridge with an upper stage for automobiles and a lower stage for railways. Reference numeral 2 designates a lower bridge girder of the bridge 1, and the work vehicle of the present invention is movably suspended between both width ends of the bridge girder 2 for use.

As shown in FIGS. 2 and 3, the working vehicle of the present invention includes working vehicle constituent units U1. It is mainly composed of U2.

Each unit U1. U2 has a running section 4 that can run on a guide rail 3 laid in the longitudinal direction on the width end of the bridge girder 2, and the running section 4 has an inverted letter shape when viewed from the front (Fig. 1). The left and right running frames 5 and 6 are fitted with a slide case 8 installed at the outer side of the lower end of the left and right running frames 5 and 6. is rotatably connected to the hinge 9, and a pin is provided at the inside position of the lower end of the traveling frame 5 in correspondence with the bracket 10 fixed to the slide case 8 when the slide case 8 is horizontally rotationally displaced. A bracket 11 is fixedly installed into which a bracket 11 can be inserted.Furthermore, the other traveling frenum 6 is pivoted via a torque actuator 12 so that it can be rotated from the same axis to the right angle direction with respect to the tip of the main beam member 7. The traveling frame 6 and the main girder 7 are
At the tip of the frame, 13 and 14 are attached to the bracket in a corresponding manner so that when the traveling frame is displaced at right angles to the main girder (J7), its position is fixed by inserting a pin. In addition, the bridge girder 2 includes voices 1 to 15 and the hoist 1 for sliding the main girder member 7 in a horizontal state.
It is equipped with a small ist rail 16 for 5. In addition, 17 indicates that when the traveling frame 5 is suspended from the bridge girder 2, the traveling frame 5 is @
Perpendicular to beam 1 (Temporary fastening shell for temporarily attaching 1F to A18, 1
9 is a clamp ring for vertically positioning the main girder ('A7).

Next, the concrete construction procedure will be explained.

First, in the bridge 1, each of the units 1 to U1 and U2 co-traveling frames 5 and the main girder member 7 are connected in advance using clamps 19. The main beam member 7 is positioned so that the side on the traveling frame 6 side is shorter than the opposite side with respect to the slide case 8, as shown by the two-dot chain line in FIG. A unit constructed in this way, for example,
Suspend the unit U with a crane (indicated by crane wire 20 in the figure) so that U' 7 is vertical, and place the unit U so that one width end of the bridge girder 2 rests on it.
Fix position 1.

Next, by releasing the clamp ring 19 and gradually loosening the crane wire 20 connected to the main girder 7 from the tensioned state, the main girder 7 is loosened through the rotation of the slide case 8. Displace it from a vertical state to a horizontal state by its own weight balance.

At this time, since the positions of the bracket 10 of the slide case 8 and the bracket 11 of the traveling frame 5 correspond, the position of the slide case 8 is fixed by inserting a pin into both.

Next, install appropriate parts of the main girder material 7 into bridge girders. Lower hoist 1
5, and by moving the hoist 15 along the hoist rail 16, the main girder material 7 is slid to the other width end side of the bridge girder 2, and the running frame 6 at the tip is connected to the width end side of the bridge girder 2. Make it stick out a little more.

Further, the 1-herc actuator 12 is driven to rotate the traveling frame 6 so that it is located above the main girder 7 at a right angle. At this time, the brackets 1 to 13 of the traveling frame 6
Since the positions of the brackets 14 of the main girder member 7 match, a pin is inserted to fix the positions of both. As shown by the dashed line in FIG. It will be in a lowered state.

Furthermore, the same steps as for unit U1 are performed to construct units 1 to U2 at positions separated by a predetermined interval in the longitudinal direction of @beam 1.

In this way both units U1. After hanging U2 from the lower surface of the bridge girder 2, unit U1. U2 running frame 5,
Connecting beams 21.
22, etc., and furthermore, a floor plate 23 is placed on the main girder 7.7 to form a work space (see FIGS. 2 and 3).

By removing the temporary fastener 17, the work vehicle can move along the guide rail 3.3.

When dismantling the work vehicle, the above-described erection procedure may be performed in reverse.

Incidentally, in the above embodiment, the case where two units 1 to U1 and U2 are connected is illustrated, but one unit is connected to U1 or U2. It is not necessary to provide two units U1 and U2 if the length is long enough to form the required working space.

[Effects of the Invention] As explained above, according to the present invention, large and long bridges, etc. can be erected in a short time without erecting large-scale scaffolding from the seabed or the bottom of the water, so it is inexpensive. Also, excellent effects such as ensuring work safety can be achieved.

[Brief explanation of the drawing]

FIG. 1 is a schematic front view without showing the construction procedure of the working vehicle of the present invention;
Figure 2 is a schematic plan view of the constructed work vehicle, and Figure 3 is a schematic plan view of the constructed work vehicle.
FIG. 1 is a bridge, 2. 1 is a bridge girder, 4 is a running part, 5 and 6 are running frames, 7 is a main girder member, 8 is a slide case, 15 is a hoist, Ul and U2 are unit parts of a working vehicle.

Claims (1)

[Scope of Claims] 1) One running frame movably suspended and supported from one width end of a bridge girder part of a bridge, etc., and a slide case rotatably attached to the lower part of the one running frame. ,
The main girder material is slidably inserted into the slide case, and the main girder material is rotatably attached to one end of the main girder material, and after the main girder material is slid in a horizontal state, it is moved to the other width end of the bridge girder part. 1. A working vehicle for repairing bridges, etc., comprising a working vehicle component unit consisting of the other traveling frame that can be suspended and supported, and a floor plate disposed on the main girder. 2) one running frame movably suspended and supported by one width end of a bridge girder part of a bridge, etc.; and a slide case rotatably attached to the lower part of the one running frame;
The main girder material is slidably inserted into the slide case, and the main girder material is rotatably attached to one end of the main girder material, and after the main girder material is slid in a horizontal state, it is moved to the other width end of the bridge girder part. A work vehicle component unit consisting of the other traveling frame that can be suspended and supported is suspended such that the one traveling frame engages with one width end of the bridge girder part with the main girder member fixed vertically. Then, by rotating the slide case, the main girder material is displaced to a horizontal state and the position of the slide case is fixed, and then the main girder material is moved so that the other traveling frame moves to the other width end of the bridge girder section. the other traveling frame is vertically rotated to suspend and support it from the other width end of the bridge girder part, and then the floor plate is placed on the main girder member. A method for constructing a work vehicle for repairing bridges, etc., characterized by: