JPS5858484B2 - Mobile scaffolding device for main cables of long suspension bridges - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a movable scaffolding device for main cables of long suspension bridges, and in particular has a structure that is easy to move and allows for efficient and safe painting, maintenance and inspection of the main cables of long suspension bridges. The purpose is to provide scaffolding equipment.

Embodiments of the present invention will be described below with reference to the drawings.

Fig. 1 is a perspective view showing a device according to an embodiment of the present invention supported on two parallel hand ropes on the main cable of a long suspension bridge, and Fig. 2 is a perspective view showing the device in the same state from the rear. The view shown in FIG. 3 is a side view of the device in the same state.

However, in FIG. 2, the left half shows the rear part, and the right half shows the front part.

As shown in these figures, the device according to the embodiment of the present invention is movably supported across two parallel hand ropes 2□, 22 installed on the main cable 1 of a long suspension bridge. a running section 3, and a pair of left and right scaffolding sections 40, 4 suspended from the running section 3 and provided on both sides of the main cable 10.
It is mainly composed of ゜ and ゜.

First, to explain the running section 3 in detail, the running section 3 has a frame section 5 equipped with a pair of wheels 61, 62 on the front, rear, left and right sides.

It is configured by attaching 7□ and 7゜.

The frame portion 5 is constructed by connecting and fixing a pair of downward U-shaped front and rear main frames 8□, 8° with a plurality of connecting rods 9, and a lifting fitting 10 is installed above the main frames 8□, 8°. Be installed.

The wheels 60,6°, 71.7□ are attached to the main frame 80,
Attach an axle 11□, 11□ to each of the axles 82 and hold it rotatably on the axle 11□, 11□.

Here, the front axle 11 is firmly fixed to the corresponding main frame 8.

That is, the front wheels 6□, 62 cannot be adjusted in their vertical positions.

On the other hand, the rear wheel 7□. The vertical position of 72 can be adjusted by attaching the axle 11 degrees to the corresponding main frame 8 degrees so that it can rise and fall.

FIG. 4 is a plan view showing the attachment of the rear axle 112.

As shown in this figure, an auxiliary frame 12 is attached to the main frame 8°, and a vertically long hole 1 is attached to the auxiliary frame 12.
3 is formed.

On the other hand, a U-shaped metal fitting 14 is attached to the end of the axle 11°.

Then, this U-shaped metal fitting 14 is fitted to the outside of the auxiliary frame 12, and the U-shaped metal fitting 14 is held to the auxiliary frame 12 by a pin 15 passing through the vertically long hole 13.

In this way, the axle 11° can be raised and lowered along the vertically long hole 13, and the rear wheels 7□,
The vertical position of 72 can be adjusted.

The running section 3 configured as described above includes rear wheels 71.
A pair of left and right jack-type adjusting devices 16 are provided for adjusting the vertical positions of , 7 degrees.

This adjusting device 16 has the same configuration on both the left and right sides.

Therefore, the adjusting device 16 on one side will be described below.

FIG. 5 is a front view of the adjustment device 16, and FIG. 6 is a side view of the same device 16.

In these figures, 17 is a nand fixed to the rear main frame 8 degrees.

Reference numeral 18 denotes a threaded rod that passes through the main frame 82 and is screwed into the nut 17.

A zodol 19 is attached to the upper end of this threaded rod 18.

On the other hand, the lower end of the threaded rod 18 is connected to the axle 1 of the rear wheel 7°, 72.
12 and is rotatably penetrated and held.

The adjustment device 16 is configured in this way.

This adjusting device 16 is connected to a threaded rod 18 using a handle 19.
By rotating the threaded rod 18, the threaded rod 18 is raised and lowered, so that the rear axle 11° and the wheels 71 and 72 can be raised and lowered.

As shown in FIG. 6, the portion through which the threaded rod 18 of the axle 11° passes is reinforced by a reinforcing member 20.

A hand-wound winch 21 is attached to the running section 3.

Specifically, a support plate 22 is fixed on the front main frame 8 of the running section 3, and the wiener 21 is mounted on the support plate 22.

This winch 21 moves the traveling section 3 and the entire apparatus of the present invention by fixing the end of the wire 23 to an appropriate location of the hand ropes 21, 2 using metal fittings (not shown) and then winding or feeding the wire. can be done.

The traveling section 3 is provided with L-shaped bands 2'h, 242 to prevent the wheels from falling off.

This L-shaped band 24□, 24° is hand loaf 2□
, and is attached to the front axle 111 by rotating it downward by 2 degrees, and is provided for each of the front left and right wheels 60 and 6 degrees.

Such L-shaped bands 241 and 242 are used to prevent the wheels from falling off when the traveling section 3 (device of the present invention) is locked after work is completed, but when the work is carried out while moving the traveling section 3, It can also be used to prevent wheels from falling off.

However, if you use it during work,...
22 pillars 250, 252 (shown in FIG. 2).

Therefore, the L-shaped bands 240, 242 have one end connected to the axle 11.
It is rotatably attached to □, while the other end is detachably attached to the axle 11 using a stopper (not shown).

That is, hand rope 2. 2° post 25. ．． 25
When passing through the L-shaped band 24.°, the L-shaped band 24. ．． Can you remove the 24° from under the ropes 20 and 22?

The traveling section 3 and the various parts attached thereto have been described above.

As described above, a pair of left and right scaffolding sections 4□, 4□ are provided suspended from the running section 3.

The scaffolding portions 44, 4° are configured in the same manner on both the left and right sides in the shape of a foldable basket equipped with a ladder.

Therefore, the scaffolding portion 41.4□ will be described in detail next, but here, one scaffolding portion 4° will be explained.

Reference numerals 26□ and 26° are a pair of main frames of the scaffold section, which are provided in parallel and perpendicularly, and are connected and fixed to each other by a plurality of horizontal bars 27.

This main frame 26□. A ladder 28 is attached to one main frame 262 of the 26° angle, using this as one vertical rod.

29 is the other vertical bar of the ladder 28, and 30 is a plurality of horizontal bars of the ladder 28.

A support lever 32 having a joint part 31 in the middle part is rotatably attached to the upper part of the other vertical rod 29 of the ladder 2B.

Parallel levers 33 and 34 are rotatably attached to the other vertical rod 29 of the ladder 28 at the middle and lower portions thereof.

Similarly, the other main frame 26 of the main frames 26□ and 26° has a support lever 35 and a parallel lever 36.
37 is installed.

38 is a joint portion between the main frame 26 and the side support lever 35.

At the tips of each of the two sets of three levers 32 to 34 and 35 to 37, a frame body 39 is provided so as to cover between the two sets, and rotates the levers 32 to 34 and 35 to 37. It can be installed freely.

Also, the other vertical rod 29 of the ladder 28 and the other main frame 2
A work floor 40 is installed between the parallel levers 34 and 37 attached to the lower part of the 6□.

Note that an X-shaped reinforcing rod 41 is attached to the frame 39.

Thus, the scaffold section 4□ configured in this manner has the main frames 26 at the lower ends of the left and right blade sides of the pair of front and rear main frames 8182 of the traveling section 3 mentioned above.

The upper end of 262 is attached by bolt 42.

In this case, auxiliary pieces 431 and 432 are fixed to the lower ends of the main frames 80 and 82 of the running section 3.

Therefore, the main frame 26 of the scaffolding section 4°. ．． Strictly speaking, the 26° upper end is attached to the auxiliary pieces 43□, 432 by bolts 42.

A ring fitting 44 is attached to the main frame 26 of the scaffold section 40, 4□ as described above.

The other end of a fixed rope 45, one end of which is fixed to a fixed part (not shown), is fixed to this metal ring 44.

Next, describe how to use the mobile scaffolding device as described above.

This mobile scaffolding device includes a running section 3 and a pair of left and right scaffolding sections 41.
．． 42, which are assembled on the ground.

Thereafter, the device is lifted by a crane using the lifting fittings 10, and the wheels 6□ are placed above the band ropes 2□, 2°.
.

6°, 7. ．． By placing it at an angle of 7°, it is movably supported on the band ropes 21, 22.

At this time, the scaffolding parts 40, 4° are located on both sides of the main cable 10.

After being supported on the band rope 21.22 as described above, the end of the wire 23 of the winch 21 is fixed at a suitable location on the band rope 21.22 on the rising side.

Also, the other end of the fixed rope 45, which is stretched on the rising side with one end fixed to a fixed part (not shown), or the scaffold part 4.42
It is fixed to a ring metal fitting 44 provided at.

The worker begins work by climbing on the pair of left and right scaffolding sections 4□, 4°.

When the work at that location is finished, for example, one person moves onto the running section 3 and operates the wiener 21.
By winding or feeding out the wire 23, the device is...
move it along.

At this time, if the scaffolding parts 41 and 4° become an obstacle, the scaffolding parts 41 and 42 are folded.

At that time, workers on the scaffolding sections 4□ and 4° evacuate to an appropriate location.

Furthermore, when moving the device, the other end of the fixed rope 45 is unfixed from the metal ring 44, and the fixed rope 45 is adjusted by pulling or drawing out the fixed row 145.

After moving to the desired position, the other end of the fixed rope 45 is fixed to the ring fitting 44 again under tension.

Although the device can be moved to the next desired position by operating the wiener 21 as described above, the device cannot be kept horizontal regardless of the inclination of the band ropes 2□, 2° and the main cable 1. reactor.

That is, when the bundle 19 of the jack-type adjustment device 16 is turned to rotate the threaded rod 18, the rear axle 11□ and the rear wheel 7□ of the traveling section 3 are integrally moved with the threaded rod 18.
7° goes up and down.

Therefore, even if the running section 3 is currently tilted, the above operation raises and lowers the rear side of the running section 3, making the running section 3 horizontal, and integrally the scaffolding sections 4□, 42 also become horizontal.

Thus, the work is repeated by repeatedly moving the device by operating the winch 21.

Then, when the work is completed, the L-shaped band 24 □,
242 is wrapped and fixed under the band ropes 2□, 2□ to prevent the wheels from falling off.

Note that the L-shaped bands 241 and 242 can also be used to prevent the wheels from falling off during work performed while moving the device.

However, if used during work, band ropes 21, 22
This becomes an obstacle when passing through the pillars 250 and 252.

In that case, the L-shaped bands 24□, 24° can be removed from under the band ropes 2□, 22 by releasing the attachment of the other end with the stopper and rotating it.

As explained above in the embodiments, the mobile scaffolding device of the present invention has two parallel ropes installed on the main cable of a long suspension bridge. a running section movably supported across the rope; a position adjustment device for vertically adjusting the vertical position of one of the front and rear wheels of the running section with respect to the frame; and a position adjustment device for at least one of the wheels. An L-shaped band is installed on the running part to prevent the wheels from falling off, a wiener is attached to the running part, and the end of the wire is fixed to the hand loaf and the running part is moved by winding or feeding. It is composed of a pair of foldable scaffolds that are suspended and provided on both sides of the main cable.

Therefore, according to the mobile scaffolding device of the present invention, painting, maintenance and inspection of the main cables of a long suspension bridge can be carried out efficiently and safely.

In particular, with regard to safety, the scaffolding section is kept horizontal by adjusting the vertical position of the wheels on the front and rear sides of the running section - on the blade side using an adjustment device, and at least one of the wheels is
Providing the mold band prevents the wheels from falling off, which is extremely expensive.

Furthermore, if the scaffolding becomes an obstacle, the scaffolding can be folded and moved, which greatly improves efficiency.

Furthermore, the above-mentioned safety can be made even higher by providing the fixed rope as described in the embodiment.

[Brief explanation of drawings]

1 to 3 are views showing an embodiment of the movable scaffolding device for the main cable of a long suspension bridge according to the present invention in a state where it is supported on two parallel hand ropes on the main cable of a long suspension bridge. Figure 1 is a perspective view, Figure 2 is a view seen from the rear, Figure 3 is a side view, Figure 4 is a plan view showing the installation of the rear axle in the traveling section of the above device, Figures 5 and 3. FIG. 6 is a diagram showing an adjusting device provided in the above device, FIG. 5 is a front view, and FIG. 6 is a side view. 1...Main cable, 2□, 22...Curved hand rope, 3...Travel section, 40, 42...
...Scaffolding section, 6□. 6゜, 7□, 7□・・・Wheel, 16・・・・・・
Janki type adjustment device, 21...Hand-wound type wiener, 23...Wire.

Claims (1)

[Claims] 1. A running section that is movably supported astride the hand ropes by placing a pair of front, rear, left and right wheels on two parallel hand ropes installed on the main cable of a long suspension bridge; A position adjustment device for vertically adjusting the vertical position of one of the front and rear wheels of the running section with respect to the frame; an L-shaped band provided for at least one of the wheels to prevent the wheel from falling off; The running part is moved by fixing the end of the wire to the hand rope and winding or sending it out.The wire is suspended from the running part and a pair of foldable scaffolds are provided on both sides of the main cable. A mobile scaffolding device for the main cable of a long suspension bridge, comprising: