JPH0749725B2 - Reinforcing filament winding device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a device for spirally winding a reinforcing long fiber around a tower structure.

<< Prior Art >> For a device for spirally winding reinforcing long fibers around the outer periphery of an existing column for seismic reinforcement, see Japanese Patent Application No. 62-1
There is 31680 (Japanese Patent Laid-Open No. 63-103168) (domestic priority claim application relating to Japanese Patent Application No. 61-122354).

That is, jack a ring-shaped fixed frame around the pillar,
It is removably installed by fixing means such as anchor bolts, and an annular swivel frame is swivelably arranged on the outer periphery of this fixed frame, and a bobbin of reinforcing long fibers is rotatably supported on the swivel frame. A boom for guiding the winding of the reinforcing long fiber pulled out from the bobbin is provided upright, and an ascending / descending means for moving the boom up and down according to the turning of the turning frame is engaged with the boom.

Then, the work can be carried out by automatically rotating the bobbin around which the fiber is wound around the outer circumference of the existing pillar or the like without providing a scaffold.

A proposal of the same kind is also disclosed in JP-A-63-8170. In the proposed device, an annular rail is laid on the floor where the columnar concrete structure is erected,
Booms similar to the above are provided on a truck running along this rail, and the reinforcing long fibers are wound around the concrete structure by these configurations.

<Problems to be solved by the invention> By the way, as structures to be reinforced, those having a height of more than 50 m, such as factory smoke exhausts, are also applicable. When winding the reinforcing long fibers around such a high structure, it is necessary to take measures such as suspending the winding device so that the winding device can be moved up and down from a low position to a high position.

In this case, it is possible to monitor the winding work at each winding height position, such as whether the fibers are wound at a predetermined pitch, or whether the supply amount and viscosity of the resin for fiber protection are as specified. desirable. In JP-B-61-10627, etc., in connection with the dismantling technology of a tower-like concrete structure, an elevator type work floor that can be lifted and lowered independently of winding work is placed outside the structure. Although the technology is disclosed, it does not have an elevating work floor for mounting a worker who can monitor the winding work while performing the winding work.Therefore, the winding work state can be sufficiently monitored. It was not there.

The present invention has been made in view of the above circumstances, and the object thereof is preferably applicable to a case where a reinforcing long fiber is wound around an ultra-high structure, and the winding operation state is sufficiently monitored by an operator. It is possible to provide a winding device for reinforcing long fibers that can be used.

<< Means for Solving the Problem >> In order to achieve the above object, the reinforcing filament winding device according to the present invention has an annular outer ring surrounding the periphery of the structure,
A hanging wire that hangs the outer ring hanging from above the structure, a lifting winch that hoists and lowers the hanging wire, a running frame that is on the inner peripheral side of the outer ring and is carried by the outer ring, and a running frame. A driving means for driving, a bobbin provided on the traveling frame for feeding out the long fibers, a feeding means provided on the traveling frame for feeding up the long fibers by being driven up and down, and a work floor provided on the outer peripheral side of the outer ring. It is characterized by having.

A plurality of work floors are provided at intervals along the circumferential direction of the outer ring, and are connected to each other via a connecting member that expands and contracts the mutual intervals along the circumferential direction of the outer ring.

<Operation> The entire winding device changes the suspension height by winding or lowering the suspension wire with the lifting winch.

On the other hand, the traveling frame travels on the orbit of the outer ring together with the bobbin to wind the long fibers, and the feeding means is moved up and down to change the feeding height of the long fibers. Therefore, by selecting the speed at which the traveling frame is driven and the ascending / descending speed of the feeding means, the winding pitch around which the reinforcing long fibers are spirally wound around the structure can be determined. It can be preferably applied to the winding work.

In addition, since the outer floor of the outer ring is equipped with a work floor for workers that can move up and down integrally with the outer ring, it is possible to directly monitor the winding pitch of the fiber and the supply state of resin by a worker who has boarded the work floor. Can be done.

Further, in high smoke exhaust pipes, etc., it is general that the lower part has a large diameter and the upper part has a gradually smaller diameter in order to stabilize the structure.
By constructing a plurality of work floors and connecting them with a connecting member that is expandable and contractable in the circumferential direction, the work floors can be separated from each other in the circumferential direction, and the monitoring position can be set in accordance with the change in the diameter of the structure. Since it can be brought close to the structure, reliable monitoring can be performed.

«Examples» Hereinafter, preferred examples of the present invention will be described in detail with reference to the drawings.

FIG. 1 shows the plane of the winding device 3 for winding the carbon long fibers 2 around the outer periphery of the chimney 1 when the structure is the chimney 1. Further, FIG. 2 shows a side surface of a part thereof.

As a seismic retrofitting method for existing chimneys, a method has been proposed in which a carbon fiber woven fabric is vertically attached to the outer circumference of the chimney 1 and the long carbon fibers are spirally wound on the outer side thereof.

This winding device 3 seems to be the most suitable for its implementation, and the chimney 1 is a structure with an outer diameter of 2150 mm, an inner diameter of 1640 mm and a height of 34 m. Abbreviated) is wound in a spiral shape with a pitch of 5 mm.

The winding device 3 has a ring-shaped outer ring 4 assembled to surround the chimney 1 and a track 5 laid in the circumferential direction of the outer ring 4 to extend an axle 6 at the extension end of the axle 6. It has a ring-shaped traveling frame carried by the attached wheels 7, that is, an inner ring 8 in this example.

On the outer peripheral side of the outer ring 4, as shown in FIGS. 1, 3, and 4, a work floor 21 for workers is provided so as to be able to move up and down integrally with the outer ring 4. A plurality of (for example, six) work floors 21 are arranged so as to surround the chimney 1, and are arranged at equal intervals in the circumferential direction. The work floors 21 that are adjacent to each other in the circumferential direction are connected to each other by a connecting member 22 such as a spiral rod so that they can come into contact with and separate from each other. That is, the connecting member 22 expands or contracts the space between the work floors 21 so that the work floor 21 as a whole is moved in the radial direction toward the chimney 1.

A centralized control device (not shown) for controlling various devices is mounted on the work floor 21.

On the other hand, on the inner ring 8 side, a guide pulley 10 horizontally rotatably supported at the tip of a vertically standing column 9 and a bobbin 11 around which several thousand monofilament carbon filaments are wound as a strand. There is a resin bath 12 having

That is, the outer ring 4 and the inner ring 8 stop at a certain height, and in this state, the inner ring 8 travels in the circumferential direction and the support column 9 moves up and down by a certain height (for example, about 1 m), so that the CF2 of the bobbin 11 is reduced.
Passes through the resin bath 12, passes through the pulley 10, and is fed to the outer periphery of the chimney 1 and wound and bonded. When the work at the work height position is completed, the entire device 3 is moved up and down to move to the next work height position, the outer ring 4 and the inner ring 8 are stopped again, and the inner ring 8 and the support column 9 are driven. Then, the work will be further advanced.

The resin bath 12 is filled with an uncured room temperature curing type epoxy resin, and CF2 of the bobbin 11 is wound around the outer periphery of the chimney 1 in a state of being impregnated with the epoxy resin, and is cured at room temperature and reinforced with carbon long fiber. It becomes plastic (CFRP).

In order to wind CF2 from the bobbin 11 around the outer periphery of the chimney 1, a chain or rack is laid in advance on the inner ring 8 in the circumferential direction, and the outer ring 4 is attached to this chain or rack.
The sprocket interlocked with the output shaft of the traveling motor 13 mounted on the side is engaged to rotate the inner ring 8 by the traveling motor 13.

In this way, even if the outer ring 4 itself is lifted, the inner ring 8 is carried so as to be able to turn on the track 5 of the outer ring 4.

Hereinafter, FIG. 5 and FIG. 6 will be referred to. In order to suspend the outer ring 4 around the chimney 1, a suspension frame 14 is installed at the top of the chimney 1.

The suspension frame 14 is composed of beam members extending at intervals of 30 ° in the radial direction of the chimney, and a pulley 15 is suspended at its tip (sixth).
Figure).

A winch 16 for lifting is installed at a ground position hanging vertically from the pulley 15.

The suspension wire 17 for suspending the outer ring 4 extends vertically upward from the take-up drum of the winch 16 and is inverted downward by the pulley 15, and the middle of the downward extension is screwed to the elevator 18 attached to the outer ring 4. ing. Of course, the tip of the wire 17 may be locked to the outer ring. However, the speed at which the winch 16 operates the suspension wire 17 determines the winding pitch of CF2. For example, considering the safety of the turning speed of the inner ring 8 together with the time required for impregnating the adhesive with the resin bath 12 with CF2, if the outer circumference length is 6.77 meters and the winding length is 1 minute and the pitch is 5 mm, the lifting speed is 5 mm. Even if the turning speed of the inner ring 8 is about 6 times that, the ascending / descending speed is 30 mm / min.

Therefore, when the winding device 3 is installed and removed, it takes too much time to perform the lifting operation only by the lifting winch 16.

Therefore, a dedicated elevator 18 is provided separately. This allows the lifting and lowering of the outer wire 4 independently of the lifting speed of the hanging wire 17.
It is possible to set 5m to 10m / min.

In order to prevent the outer ring 4 from rolling, short pipe guide members 19 are vertically arranged at 120 ° intervals on the outer ring 4, and a suspending wire 17 is erected from a lifting winch 16 to a pulley 15. When raising, the suspension wire 17 is passed through the guide member 19.

The inner wheel 8 is rotated by the traveling motor 13, and the outer wheel 4 is gradually raised or lowered by the lifting winch 16.

The reinforcing long fibers used are not limited to carbon fibers, but may be glass fibers, aramid fibers, or the like.

As the room temperature curable adhesive to be used, any one can be used as long as it is generally used.
For example, urea resin, resorcin resin, phenol resin,
This is an adhesive which is made by using an epoxy resin as a base material and mixing it with a curing agent so that it can be cured at room temperature.

Since the work floor 21 is provided on the outer peripheral side of the outer ring 4 during such CF2 winding work, whether CF2 is wound at a predetermined pitch, whether the supply amount of the resin and the viscosity are as specified, etc. Can be directly monitored by a worker who gets on the work floor 21.

Further, as shown in FIG. 3, in the case of a structure in which the lower portion of the chimney 1 has a large diameter and the upper portion has a gradually smaller diameter, the working floor 21 is separated from each other by the connecting member 22 when the upper portion of the chimney 1 is wound. The size is reduced to a reduced diameter state, and when the lower part of the chimney 1 is wound, the mutual space is increased and the diameter is increased, so that the working floor 21 corresponds to the diameter of the chimney 1 and the outer peripheral surface of the chimney 1. It can be placed in a state where a suitable distance is opened, and appropriate monitoring can be performed.

<< Effects of the Invention >> Since the present invention is configured as described above, it has the following effects.

(1) Since the work floor is provided on the outer peripheral side of the outer ring, it is necessary for the worker to get on the work floor whether CF is wound at a predetermined pitch, and whether the resin supply amount and viscosity are within specified values. Can be directly monitored by.

(2) In the case of a structure in which the lower part has a large diameter and the upper part has a gradually smaller diameter, the working floor is reduced in diameter by the connecting member when wound on the upper part, and the work floor is wound on the lower part. When turning, the mutual space is increased and the diameter is expanded, so that the work floor can be placed on the outer peripheral surface of the structure with an appropriate distance depending on the diameter of the structure, and proper monitoring can be performed. Can be done.

[Brief description of drawings]

Each of the drawings relates to an embodiment of the present invention, FIG. 1 is a plan view showing a main part of a winding device, FIG. 2 (a) is a schematic explanatory view seen from the direction A in FIG. 1, and FIG. FIG. 2B is a schematic explanatory view similarly seen from the direction B in FIG. 1, FIG. 3 is a side view showing two upper and lower arrangement examples of the winding device with respect to the chimney, and FIG. 4 shows a work floor. A plan view, FIG. 5 is a cross-sectional view illustrating an engaged state of an elevator and a suspension wire, and FIG. 6 is a side view illustrating the suspension wire. 1 …… Structure (chimney) 2 …… CF 4 …… Outer ring 8 …… Traveling frame (inner ring) 10 …… Feeding means (pulley) 11 …… Bobbin 13 …… Driving means (traveling motor) 16 …… For lifting Winches 17 …… Suspension wires 21 …… Work floor 22 …… Connecting members

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Kensuke Taniki, 1000 Kamoshida-cho, Midori-ku, Yokohama, Kanagawa Sanryo Kasei Co., Ltd. (72) Tsuneo Tanaka, 1000 Kamoshida-cho, Midori-ku, Yokohama Sanryo Kasei Co., Ltd. Research Institute (56) Reference JP-A-63-103168 (JP, A)

Claims (2)

[Claims] 1. An annular outer ring surrounding a structure, a suspending wire hanging from above the structure to suspend the outer ring, an elevating winch for winding down the suspending wire, and the outer ring. A traveling frame on the inner peripheral side of which is movably carried by the outer wheel, drive means for driving the traveling frame, a bobbin provided on the traveling frame for feeding out long fibers, and provided on the traveling frame. A device for winding a reinforcing long fiber, comprising: a feeding means that is driven up and down to feed the long fiber; and a work floor provided on the outer peripheral side of the outer ring. 2. The plurality of work floors are provided at intervals along the circumferential direction of the outer ring, and are connected to each other via a connecting member that expands and contracts the mutual intervals along the circumferential direction of the outer ring. Item 1. The reinforcing filament winding device according to Item 1.