JPH0423927Y2 - - Google Patents

Description

[Detailed explanation of the invention] [Industrial application field] This invention realizes this with a simple configuration and monitors work equipment for painting, inspecting, repairing, etc. the legs of elevated bridges on expressways. This is what I did.

[Conventional technology]

The legs of viaducts on expressways and other highways have traditionally been made of bare concrete, but recently the legs have been painted, as the color and scenery do not blend in with the surrounding area.

When painting such viaduct piers, or when inspecting or repairing cracks in concrete, etc., conventionally, scaffolding boards were hung from the bottom of the viaduct or scaffolding was erected around the viaduct piers. was working.

[Problem that the invention attempts to solve]

The conventional methods of suspending scaffolding boards or building scaffolding have the drawbacks of being large-scale, requiring time for temporary construction, and requiring a large amount of materials. Additionally, when lifting large scaffolding boards, traffic on the road below had to be temporarily shut down, necessitating significant traffic restrictions.

This invention solves the problems in the conventional technology and is simple in construction, requires less time for temporary construction, and minimizes the restrictions on the structure of the structure below when temporarily installed. The purpose is to provide a departmental work device.

[Means for solving problems]

This idea consists of installing rails in the width direction of the viaduct at the front and rear of the viaduct, sandwiching the viaduct piers, and suspending a work platform between these rails so that it can move and move up and down. The platform is characterized in that it is configured in a substantially U-shape so as to be able to accommodate the overhang part of the viaduct pier by a horizontal part and vertical parts removably attached to the front and rear of the horizontal part. It is something.

[Effect]

According to the above-mentioned solution of this invention, work such as painting, inspection, repair, etc. is performed on the elevated bridge pier having a T-shape or the like by having a person sit on a workbench and move it along the rail and raise and lower it. I can do it.

According to this, there is no need to erect scaffolding all around the lower part of the viaduct and the legs, so the time required for installation and removal is shortened, fewer traffic regulations are required, and less materials are required.

Further, according to this invention, the workbench is configured in a substantially U-shape so that the overhang part of the elevated bridge pier can be accommodated by the horizontal part and the vertical parts removably attached to the front and rear of the horizontal part. , the side and bottom surfaces of the overhang can be easily worked on. Further, it is possible to remove the horizontal part and use only the vertical part to work on the front and rear sides of the pillar part.

A trolley for moving the workbench is installed on the rail, and the wire rope is suspended from the trolley. A hoist is installed on the workbench, and the hoist is driven to lift the lower end of the wire rope. By winding it, the workbench can be easily raised and lowered.

In addition, wire ropes were suspended from the bridge, and multiple hoisting machines were installed on the rails.
By driving this hoist to wind the lower end of the wire rope and raise the rail, the rail can be easily installed at the lower part of the bridge section.

Further, by providing multiple floors on the vertical portion of the workbench, it is possible to easily work on the side surfaces of the overhang portion.

Furthermore, if the rails are of a split structure, it becomes easier to install and remove the rails, and fewer traffic regulations are required when raising and lowering the rails.

〔Example〕

An embodiment of this invention is shown in FIG. This is a front view of the legs of the viaduct, with the viaduct extending perpendicular to the page.

The leg portion 10 is made of reinforced concrete and has a substantially T-shape including a central column portion 13 and overhang portions 12a and 12b extending horizontally from the left and right at the top thereof. A bridge section is mounted and supported on the upper part of the leg section 10. The bridge section 14 provides strength to the viaduct by arranging beams 16 made of I-beam steel at equal intervals and parallel to each other in the longitudinal direction of the viaduct.

At the lower part of the bridge part 14, rails 18 are installed in the width direction of the viaduct at the front part and the rear part with the leg part 10 in between. Each rail 18
is divided into about three parts so that it is not necessary to completely block the traffic below when raising and lowering the bridge for attachment to or removal from the bridge section 14.
After being attached to the bridge section 14, the divided sections are interconnected by a connecting member 17, and are separated again when being removed from the bridge section 14.

An example of the mounting structure of the rail 18 to the bridge section 14 is shown in FIG. 2 (front view) and FIG. 3 (side view). Here, the rail 18 corresponds to each beam 16.
The inverted L-shaped bracket 22 can be slid into the
Install these brackets 22, facing each other one by one.
22 to the lower flange 16 of the beam 16.
The rail 18 is attached by sandwiching the rails 16a and 16a from both sides. Flange 16 with brackets 22, 22
After sandwiching a and 16a from both sides, a fixing pin 28 is passed through the holes 24 and 26 formed in these and fixed. Note that a plurality of holes 24 in the rail 18 are provided so as to correspond to differences in the arrangement intervals of the beams 16 and the lengths of the flanges 16a.

In FIG. 1, on the upper part of the rail 18, a hoist 30 is fixed to the left and right ends of each divided rail 18 for raising and lowering the rail 18 when attaching or removing the rail 18 to the lower part of the bridge section 14. ing. One end of the wire rope 32 of the hoist 30 is hung on the bridge section 14.

Further, two trolleys 34 for moving the workbench 32 along the rails 18 are installed on each of the front and rear rails 18 and are connected to each other by a connecting bar 64. A wire rope 36 for suspending the workbench 32 is connected to these four trolleys 34 in total.

Note that one of the four trolleys 34, indicated by 34', is a geared trolley, and a worker on the workbench 32 rotates a chain 35 hooked thereon to move the workbench 32 onto the rail 18. can be moved along. The other three trolleys are plain trolleys.

The workbench 32 has overhang parts 12a and 12b.
It is configured in a substantially U-shape so as to accommodate the space from below. The workbench 32 is lowered from the trolley 34 by four wire ropes 36 placed at the four corners. Each wire rope 36 connects to the workbench 32
The work table 32 is raised and lowered by being wound by a hoist 38 installed in the work table 32 . The hoist 38 can be controlled by a worker sitting on the workbench 32.

Detailed views of the workbench 32 are shown in Figure 4 (front view) and Figure 5.
(side view) and FIG. 6 (plan view).

The workbench 32 is composed of a horizontal portion 32a and vertical portions 32b provided at the front and rear of the horizontal portion 32a (FIG. 4). The horizontal section 32a includes a floor section 40 on which a worker stands and performs work, and a handrail 42 provided at the periphery of the floor section 40. A net 44 is stretched under the handrail 42. The vertical portion 36b has a two-layer structure including a first floor floor 46 and a second floor floor 48, and the first floor floor 46 and the second floor floor 48 can be ascended and descended using a ladder or the like. ing. (Fig. 4) Furthermore, handrails 50, 52 are provided around the first and second floors, and nets 54, 56 are stretched below them. A hoist 38 for the lifting wire 36 and a control panel 58 for controlling the lifting and lowering are installed on the first floor.

The horizontal portion 32a and the vertical portion 32b of the workbench 32 are removably connected by bolts or the like. When working on the overhang parts 12a, 12b of the viaduct pier 12 and the left and right sides of the column 13, they are used in a connected state, and when working on the front and rear sides of the column 13, the horizontal part 32a is removed and the vertical Work is performed only on section 32b.

Note that casters 60 for moving on the ground are attached to the bottom surface of the workbench 32. Also,
A limit switch 52 for the upper limit when the workbench 32 ascends is attached to the upper end of the workbench vertical section 32b, and a rubber weight attached to the top of the wire rope 36 suspended from the geared trolley 34'. 62 to stop the lifting of the work platform 32.

Next, an example of operation for painting, inspecting, repairing, etc. the leg 10 using the above-described elevated leg working device will be described.

(1) Installing the rail 18 A worker climbs onto the overhang portion 12 and hooks the upper end of the wire rope 32 for raising and lowering the rail onto the bridge portion 14 . Then, the lower end of the wire rope 32 is wound around a hoist 30 installed on the rail 18, and the hoist 30 is operated from the ground to raise the rail 18 while maintaining it in a horizontal state.
A trolley 34 is installed in advance on the rail 18, and a wire 36 is hung thereon. Further, a bracket 22 is slidably installed. In addition,
When the rail 18 is pulled up, the rail 18 is divided (2
(divide, divide into 3, etc.) and perform in order. In this case, two sets of wire ropes 32 and hoisting machines 30 are provided for each divided portion.

When the rail 18 reaches the bottom of the bridge section 14, the pulling up is stopped. Then, the brackets 22 are slid and sandwiched between the lower flanges 16a of each beam 16 from both sides. Once clamped, the bracket 22 is fixed to the rail 18 with the stop pin 28. Thereby, the rail 18 is attached to the lower part of the bridge section 14.

(2) Installing the workbench Install the rails 18 parallel to the front and rear sides of the legs 10.
After completing the installation, it is time to install the workbench 32. The installation of this workbench 32 is
is placed on a truck or the like and positioned below the trolley 34, and the lower end of the wire rope 36 is hung on the hoist 38. When all four wire ropes 36 are hung, the worker gets on the workbench 32 and operates the operation panel 58 to drive the hoisting machine 38.
to rise. The workbench 32 is installed at a location that does not obstruct traffic below (for example, at a location near the column 13 or at an end).

(3) Work When performing work (painting, inspection, repair, etc.) on the overhang portion 12a, perform the work on the first or second floor of the vertical portion 32b for the side surfaces. Further, as for the lower surface of the overhang part, work is carried out while riding on the horizontal part 32a. At this time, the operation panel 58 is operated to control the movement and elevation of the workbench 32.

When working on both the left and right sides of the column part 13, the work table 32 is raised and lowered while riding on the horizontal part 32b. When working on both the front and rear sides of the column part 13, remove the horizontal part 32b and remove the vertical part 3.
2b rides and performs the work.

When working on the left overhang part 12, the horizontal part 32a is attached again and the work is carried out.

(4) Removal When the work is finished and the work equipment is to be removed, move the work platform 32 to a position where it will not interfere with traffic, lower it, and place it on the truck waiting below. Then, attach the wire rope 36 to the workbench 3.
Remove from 2.

After removing the workbench 32, the operator climbs onto the legs 10, slides the bracket 22, and removes it from the flange 16a of the beam 16. Then, the hoisting machine 30 is operated to lower the rails 18 one by one.
When the rail 18 is lowered, the worker lifts the wire rope 3
2 from the bridge section 14 to complete the entire work.

In addition, what is shown in the above embodiment is the bridge part 14.
Since it can be attached at any position below the leg section 10, it is possible to perform various operations on the entire viaduct section.

[Effect of idea]

As explained above, this invention eliminates the need to erect scaffolding all around the lower part of the viaduct and the legs, so the time required for installation and removal is shortened, traffic regulations are reduced, and materials are also saved. Less is enough.

Further, according to this invention, the workbench is configured in a substantially U-shape so that the overhang part of the elevated bridge pier can be accommodated by the horizontal part and the vertical parts removably attached to the front and rear of the horizontal part. , the side and bottom surfaces of the overhang can be easily worked on. Further, it is possible to remove the horizontal part and use only the vertical part to work on the front and rear sides of the pillar part.

[Brief explanation of the drawing]

FIG. 1 is a front view showing an embodiment of this invention. FIG. 2 is a front view showing the mounting structure of the rail 18 to the beam 16 in FIG. 1. Third
The figure is a side view of that of FIG. 2. Figure 4 shows
2 is a front view of the workbench 32 of FIG. 1. FIG. Figure 5 shows
It is a side view of the same workbench 32. FIG. 6 is a plan view of the workbench 32. 10... Leg part, 12... Overhang part, 13
...Column part, 14...Bridge part, 16...Beam, 16a
...Flange, 22...Bracket, 32...Workbench.

Claims (1)

[Claims for Utility Model Registration] (1) Rails 18 are installed in the width direction of the viaduct at the lower part of the bridge section 14 at the front and rear positions across the viaduct pier section 10, and a work platform 32 is installed between these rails 18. The workbench 32 is suspended movably and vertically, and the workbench 32 is connected to the viaduct pier 10 by a horizontal portion 32a and vertical portions 32b removably attached to the front and rear portions of the horizontal portion 32a.
An elevated bridge pier working device characterized in that it is configured in a substantially U-shape so as to be able to accommodate an overhang portion 12a of the elevated bridge pier. (2) A trolley 34 for moving the workbench 32 is installed on the rail 18, a wire rope 36 is suspended from the trolley 34, and a hoist 38 is installed on the workbench 32 to move the workbench 32. Upper machine 3
8. The elevated bridge pier working device according to claim 1, wherein the working platform 32 is raised and lowered by driving the wire rope 8 and winding the lower end of the wire rope 36. (3) A wire rope 32 is suspended from the bridge section 14, and a plurality of hoisting machines 30 are installed on the rail 18, and the hoisting machines 30 are driven to remove the lower end of the wire rope 32. The elevated bridge pier according to claim 1 or 2, wherein the rail 18 is installed at the lower part of the bridge section 14 by winding the section and raising the rail 18. working equipment. (4) The elevated bridge pier working device according to any one of claims 1 to 3, wherein the vertical portion 32b of the workbench 32 has multiple floors 46, 48. (5) Utility model registration claims 1 to 4, characterized in that the rail 18 has a split structure.
Elevated bridge pier working device according to any of paragraphs.