JPH0220249Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a slope climbing assist device for work scaffolding on a long suspension bridge.

During the erection work of a long suspension bridge, work scaffolding is erected in the bridge axis direction across the abutments on the opposite bank and the tops of the main towers erected at intervals in the bridge axis direction between the abutments,
Cable erection work and other various works are being carried out on the floor assembly of the work scaffold.

As a result, workers are forced to walk long distances (several hundred meters) on floor structures with unstable footing.

The total length of the floor assembly of the work scaffold may be more than 1,500 meters, and the slope of the floor assembly is steep near the top of the tower.
Even though the angle may exceed 30°, no mechanical compensation has been used until now for walking.

Therefore, walking over long distances multiple times a day on steep slopes and unstable floor structures that sway due to wind pressure, etc. is not only extremely painful for workers, but also causes fatigue. Ta. As a result, not only does this lead to a decrease in work efficiency, but also the ability to foresee danger, instantaneous judgment, athletic ability, agility, etc. deteriorate due to fatigue, which poses a safety problem.

Therefore, in order to solve these conventional problems, the present invention provides a slope climbing assist device on the slope part of the work scaffold, thereby improving work efficiency by shortening the time required for workers to walk on the work scaffold. This is effective in terms of occupational safety and health by shortening the construction period and preventing workers from becoming extremely fatigued.
Therefore, in the present invention, in a structure in which a work scaffold is erected in the axial direction of the bridge across the abutment on the opposite bank and the tower top that is erected at intervals in the axial direction between the abutments,
A driving rotating body and a driven rotating body each having a driving body are disposed at least on one side of the slope of the work scaffold at intervals in the bridge axis direction, and gripping ropes are endlessly hung on each of the driving rotating body and the driven rotating body. control means for deactivating the drive bodies are provided in the vicinity of the driving rotary body and the driven rotary body, and a tension stabilizing mechanism is further provided to keep the initial tension of the grab rope constant. Features.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

In Figure 1, 1 and 2 are abutments on the opposite bank, 3 and 4
is a main tower, which is erected at intervals in the bridge axis direction between the abutments 1 and 2, and a saddle is provided at each of the tower tops 3A and 4A. Reference numeral 5 designates a work scaffold for cable installation called a catwalk, which includes a floor assembly 5A and handrail members 5 on both sides thereof, as shown in FIG.
B, the abutment 1, 2, tower top 3A, 4
It is constructed across A in the bridge axis direction, and has a sloped section 6 near the top of the tower.

In addition, in FIG. 1, 7 indicates a hanger rope, and 8 indicates a storm rope.

At least one side of the floor assembly 5A in the slope section 6 is provided with a slope climbing assist device 9 according to the present invention, as schematically shown in FIG. 2, inside the handrail member 5B.

As schematically shown in FIGS. 2 and 3, the slope climbing assist device 9 includes a driving rotary body 10 and a driven rotary body 11, which are arranged at intervals in the bridge axis direction on the slope part 6, and the rotary bodies 10, 1.
A plurality of guide rotating bodies 12 each having an endless shape between them.
A grasping rope 13 suspended through the rope 13, a tension stabilizing mechanism 14 that applies a constant initial tension to the rope 13, and rotating bodies 10 and 1 that deactivate the driving body.
It is mainly composed of control means 15 and 16 provided near 1.

In this embodiment, the drive rotating body 10 is located above the slope part 6, and a pedestal 17 is placed on the floor assembly 5A as shown in FIG.
is attached to the bearing part 1 provided on the upper part of the pedestal 17.
A horizontal tilting shaft 19, which is a rotating shaft, is pivotally supported at 8, and the horizontal tilting shaft 19 can be driven by a drive body 20, which is a geared motor with an electromagnetic brake.

A driving body 10, exemplified by a capstan, is attached to the inclined horizontal shaft 19, and its diameter is set so that the upper rope area is located at the height H of the worker's waist.
It is slanted so that the upper part faces inside the floor assembly 5A to ensure a width L of 50 cm and to prevent workers from tripping on the lower rope.

Reference numeral 21 denotes a bracket, which has rope detachment prevention pins 22 at its three ends.

Note that when the driving rotary body 10 is a capstan, its diameter is as large as approximately 1 m, so the fifth
As shown by numerals 10A and 10B in the figure, the structure may be divided into a capstan and a sheep with a diameter of 30 to 50 cm.
Also, when wrapping the gripping rope 13 many times in order to prevent it from slipping in the capstan groove surface, the sixth
A capstan groove shape 10C shown in the figure can be adopted.

7 and 8 show details of the driven rotating body 11, a pedestal 23 attached to the floor assembly 5A, and an inclined horizontal shaft 2 serving as a rotating shaft supported by a bearing portion 24 of the pedestal 23.
5. It is the same as the driving rotor 10 described above in that it includes the rotating body 11 represented by a capstan attached to the shaft 25 and a bracket 27 having a rope detachment prevention pin 26, and has a height H and a size L. The same is true.

That is, the upper side of the driving rotary body 10 and the driven rotary body 11 are located inside the floor assembly with respect to the lower side, so that it is convenient for the worker to grasp the rope 13.
Moreover, they are rotated within the same inclined plane without their feet getting caught on the lower rope. In addition, in FIG. 8, 11A and 11B indicate the case of driven rotating bodies consisting of a capstan and a sheep.

Referring to FIGS. 9 and 10, an example of a support structure for the guide rotating body 12 is shown, and 28 is a bracket, and in this example, the shaft 29 of the clutch-shaped rotating body is shown.
can be freely adjusted and fixed in the height direction via a screw adjuster 30, and a guide rotating body 12 is supported on the shaft 29 via a bearing 31 so as to freely rotate, and a rope is provided above the rotating body 12. A roller 32 for preventing detachment is installed. Note that the outer peripheral surface of the guide rotating body 12 is coated with a rubber or other elastic protective layer 12.
It is desirable to provide A.

Referring to FIGS. 11 and 12, an example of the tension stabilization mechanism 14 is shown in detail.

That is, a base 33 is mounted on the floor assembly 5A and is provided with guide sheeps 34 and 35, respectively. 36 is a tramway support rope, and 37 is a gear rose frame, which are indispensable equipment on the work scaffold 5 in cable construction. Therefore, in this example, a bracket 38 is attached to the frame 37, and the bracket 38 The jeep 41 is provided with guide sheeps 39 and 40, and the grasping rope 13 is hung around each of the above-mentioned sheeps and the floating sheep 41 as shown in the figure, and a weight 42 is suspended from the bracket of the jeep 41 to ensure the initial tension of the rope 13. There is.

The tension stabilizing mechanism 14 can be constructed by providing a weight 42A below the floor assembly 5A as shown in FIG. 2, or can employ various mechanisms including an automatic tension mechanism using spring force.

Although not shown, an overload warning device,
End point notification device, rope cover, overload prevention device,
Safety devices such as a rope stretch detection device and an emergency stop device can be attached, and the tension stabilization mechanism 14
can be provided with the above-mentioned rope separation prevention mechanism. Further, the rope may be made of any material such as a resin rope.

Next, to explain the operation, when a worker climbs uphill to the tower tops 3A and 4A, the worker turns on the control means 16, starts the drive body 20, and moves the grab rope 13 with the arrow shown in FIG. Circulate in the direction shown.

Thereby, by grasping the rope 13, the worker can easily and easily climb the slope 6 with less effort.

Since the rope 13 is inclined so that the upper side of the driving rotary body 10 and the driven rotary body 11 is inward with respect to the lower side, the rope 13 is easy to grasp and can be climbed with a wide footing.

After climbing the slope, the driving body 20 can be stopped by operating the control means 15 in the stopping direction. Furthermore, if the vehicle is operated continuously for a long period of time, it is possible to walk using the auxiliary running force at any position within the section.

The present invention is as described above, and the control means 15, 1
By stopping the operation of 6, the gripping rope 13 suspended between the driving rotary body 10 and the driven rotary body 11 can be circulated and stopped. This can reduce worker fatigue. Therefore, the construction period can be shortened and work efficiency can be improved.

Furthermore, since the initial tension of the gripping rope 13 is kept stable and constant by the tension stabilizing mechanism 14,
There is no slippage of the rope 13, and the drive rotating body 10,
If the driven rotating body 11 has a double structure, slippage can be further prevented.

Furthermore, the driving rotary body 10 and the driven rotary body 11 are rotated with their upper parts inclined inwardly relative to their lower parts, and since the rope 13 is hung thereon, it is easy to grasp the rope 13 while climbing a slope. This also has the advantage that the rope 13 does not get caught under the feet.

Therefore, it is of great significance when dealing with unstable objects such as work scaffolding on long suspension bridges.

[Brief explanation of the drawing]

The drawings show an example of the implementation of the present invention; Fig. 1 is a front view of the suspension bridge work scaffold in an erected state, Fig. 2 is a schematic diagram of the overall configuration of the walking aid device, Fig. 3 is a partially omitted cross-sectional view thereof, and Fig. 4 is a detailed diagram of an example of the support part of the drive rotor,
FIG. 5 is a partially omitted view of the arrow A-A in FIG. Fig. 7 is a partially omitted view taken along arrow A-A, Fig. 9 is a front view of an example of the support part of the guide rotating body, Fig. 10 is a partially cutaway sectional view of Fig. 9, and Fig. 11 is a tension stabilizing mechanism. Front view of an example, 1st
Figure 2 is also a side view. 1, 2... Bridge abutment, 3A, 4A... Tower top, 5...
. . . Working scaffold, 6 .

Claims (1)

[Claims for Utility Model Registration] 1. A work scaffold 5 extending in the bridge axis direction across the abutments 1 and 2 on the opposite bank and the tower tops 3A and 4A erected between the abutments 1 and 2 with an interval in the bridge axis direction. In the constructed structure, drive bodies 20 are installed at intervals in the bridge axis direction on at least one side of the slope part 6 of the work scaffold 5.
A driving rotary body 10 and a driven rotary body 11 are respectively disposed, and a gripping rope 13 is endlessly hung around each of the driving rotary body 10 and the driven rotary body 11. Control means 15 and 16 for stopping the actuation of the driving body 20 are respectively provided in the vicinity of the gripping rope 11, and a tension stabilizing mechanism 14 for keeping the initial tension of the gripping rope 13 constant is provided. A climbing aid device for work scaffolding on suspension bridges. 2. Each of the driving rotary body 10 and the driven rotary body 11 is pivotally supported around inclined horizontal shafts 19 and 25, and the upper side of each of the rotary bodies 10 and 11 is located inside the work scaffold 5 with respect to the lower side. A slope-climbing assist device for a work scaffold on a long suspension bridge as claimed in claim 1, characterized in that the device is rotatable on an inclined plane.