JPS6310023A - Wire winding device for concrete structure - Google Patents

Abstract

PURPOSE:To perform the winding of a wire onto a concrete structure in order as scheduled by driving the rotary ring surrounding a concrete structure with the setting of the inclined angle of the wheels of a travelling device and the motion control by the driving device with its rotation. CONSTITUTION:A rotary ring 1 is provided surrounding a concrete structure A and both rubber wheels 2a, 2a of a travelling device 2 are abutted to the outer peripheral part of the structure A. After setting the inclined angle theta of the rubber wheel 2a to the necessary winding angle, a driving device 4 is driven with its rotation and the rotary ring 1 is rotated in the direction corresponding to the prescribed inclined angle theta. The reinforcing wire 7 of a recoiler 5 is recoiled with the prescribed tension from a guide roll 9 and wound on the outer peripheral face of the structure A at the prescribed gap pitch. In this way, the winding of the reinforcing wire 7 onto the structure A can surely be executed always as scheduled.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to wire winding for shear reinforcement of concrete structures, and more specifically, to winding of wire rods in existing concrete structures 9, for example, concrete in buildings. This relates to a device for winding wire rods such as reinforcing m-fibers around columns, beams, etc. for shear reinforcement.

[Conventional technology]

Conventionally, in order to impart seismic properties to this type of existing concrete structure, steel plates, welded wire mesh, composite materials of strips and mortar, and strips and epoxy resin have been used on the outer surface of the structure. Measures have been proposed and implemented to strengthen shear strength by rolling reinforcing members such as composite materials.

Therefore, when applying shear reinforcement by wrapping reinforcing members such as steel plates on the outer surface of an existing concrete structure, it is necessary to weld the steel plates on-site and with excellent welding technology. Reliable work by a skilled person is essential.Then, cement mortar or the like is densely filled between the structure and the wrapped reinforcing members to connect them together, and the structure is not attached to the structure from the outside. The applied stress is effectively transmitted to the reinforcing member on the outer surface.

However, with such shear reinforcement methods for existing concrete structures, the construction itself is complicated, such as densely filling cement mortar and joining together, and the structure When a crack occurs in a portion, stress is concentrated on the reinforcing member near the crack, which has the disadvantage that the strength of this reinforcing member cannot be fully utilized.

Therefore, the inventors of the present invention focused on this point and proceeded to! A reinforcing wire such as fiber-reinforced plastics is left wound around the outer surface of the structure, and the stress applied to the structure from the outside is transferred to the wound reinforcing wire as soon as possible. We have proposed a method for preventing the growth of cracks and, by extension, the destruction of the structure, by dispersing and transmitting stress to the reinforcing wire, avoiding stress concentration on the reinforcing wire, and making full use of the strength of the reinforcing wire.

[Problem that the invention seeks to solve]

However, the winding of the reinforcing wire around the outer surface of the concrete structure according to the above-mentioned proposal by the present inventors,
Since the structure is an existing structure and is subject to various constraints on site conditions, it is extremely difficult to wind reinforcing wire in an orderly manner on the outside of the structure as planned during site work. There was a problem.

Therefore, an object of the present invention is to solve these problems and to easily wind reinforcing wire around the outer surface of an existing concrete structure. An object of the present invention is to provide a wire winding device for a concrete structure.

[Means for solving problems]

In order to achieve the above object, a wire rod winding device for a concrete structure according to the present invention includes a rotating ring that can be divided and combined so as to surround a target structure;
This rotating ring is repeatedly struck via a telescopic arm, and the rotating ring is moved up and down in a spiral along the structure using a drive wheel that comes into contact with the outer surface of the structure at a predetermined angle of inclination. In addition, a feeding device capable of feeding out the reinforcing wire at a predetermined tension is provided on the rotating ring, and the reinforcing wire to be fed out is guided from the guide roll to the outer surface of the structure. It was made so that it could be done.

[For production]

That is, in this invention, the operation of the rotating ring placed surrounding the existing concrete structure is controlled by the setting of the inclination angle given to the wheels of the traveling device and the rotational drive by the drive control device. For the external part. The reinforcing wire can be wound continuously at a predetermined pitch, and at the same time, by controlling the feeding tension of the feeding device,
A predetermined winding tension can be obtained.

〔Example〕

EMBODIMENT OF THE INVENTION Hereinafter, one embodiment of a wire rod winding device for a concrete structure according to the present invention will be described in detail with reference to FIGS. 1 and 2.

FIG. 1 is a perspective view showing the general structure of this embodiment, and FIG. 2 is an explanatory view of the operation of the traveling device portion.

In these FIGS. 1 and 2, the symbol A is an existing concrete structure to be wound, in this case a column member having a circular cross section, and the symbol B is a wire rod according to this embodiment. It is a winding device.

Therefore, the wire rod winding device B has an arbitrary dividing surface 1a,
A set of rotating rings 1.1 that can be divided by la, and multiple locations 1 on the inner peripheral surface of each rotating ring 1.1. It has the required number of running devices 2 which are projected via telescoping arms 3 whose angles are variable, and a payout device 5 which is mounted on each rotary ring 1.1.

In this case, the rotating rings 1.1 consisting of one set are once divided and then recombined so as to surround the existing concrete structure A, and each telescoping arm 3 is adjusted for expansion and contraction. , each traveling device 2 provided at the tip of each telescoping arm 3 is brought into contact with the outer surface of the structure A, with the rotating ring 1.1 being placed as concentrically as possible on the structure A. This is so that it can be done.

And, as each of these traveling devices i12, for example,
It has rubber wheels 2a, 2a with a high coefficient of friction, and both rubber wheels 2a, 2a can be rotationally driven by the drive control device 4, and the axial inclination angle of the telescoping arm 3 itself,
In other words, the contact inclination angle 0 of both rubber wheels 2a, 2a with respect to the axis a-a of the existing concrete structure A is also
The drive control device 214 allows the rotation of the rotary ring 1.1 to be varied by the drive control device 214, and as described later, the rotary ring 1.1
along the axis a-a of the structure A, so that it can be moved up and down by rotating it spirally at an angle corresponding to the inclination angle θ, and if necessary, move the inclination angle 0 to the axis. By making it parallel to the line a-a, it is possible to move up and down in a straight line without rotation, and the drive FIjJIl device 4 can be connected to the outside via a cable or the like. Power is supplied from a power source or from an appropriately mounted battery power source.

Furthermore, the collapsing device 5 mounted on the rotary ring 1.1 is equipped with a pobbin 6 for reinforcing wire 7, and the reinforcing wire 7 is moved through guide rolls 9 with a predetermined tension by an appropriate braking mechanism 8. make it possible to deliver, and if necessary,
Room-temperature curing reinforced resin liquid 1 filled with resin impregnation device 2110
1 can be impregnated with it.

Here, as the reinforcing wire 7, a conventionally known m-fiber reinforced resin or the like may be used. For example, epoxy resin is mixed with carbon m
When using composite materials reinforced with fibers, glass fibers, etc.
This material is highly effective in suppressing the expansion and growth of cracks that occur in concrete structures due to its high tensile strength and light weight. By impregnating the reinforcing wire rod 7 with the room temperature curing reinforcing resin liquid 11,
This reinforcing wire 7 can be used in a pliable and easy-to-handle state before hardening.

Therefore, in the device configuration according to this embodiment, the rotating ring 1.1 is disposed surrounding the existing concrete structure A, and each telescopic arm 3 is adjusted to expand and contract, so that the rotating ring 1.1 can be rotated as much as possible. The rubber wheels 2a, 2a of the traveling device 2 are brought into contact with the outer surface of the structure A so that the wheels 2a, 2a of the traveling device 2 are placed concentrically with the structure A, and in this state, first, the traveling device 2 is The inclination angle 0 of both rubber wheels 2a, 2a in the structure A
By making the rotating ring 1.1 parallel to the axis a-a of the structure A and rotating it by the drive control device 4, the rotating ring 1.1 is quickly moved linearly to the upper end position of the structure A, and the rotating ring 1. The end of the reinforcing wire 7 fed out from the feeding device 5 above is properly fixed to a part of the upper end outer surface of the target concrete structure A, and then the inclination angle is 0.
is the desired winding angle, i.e. *a! ! 2, drive again: drive the fJ control device 4 to rotate,
the rotating ring 1.1 in a direction corresponding to the same inclination angle θ;
In this case, by rotating it spirally downward, the reinforcing wire rod 7 of the feeding device 5 is impregnated with the reinforcing resin liquid 11 as it is, or if necessary, via the resin impregnating device 10, and then the reinforcing wire rod 7 is impregnated with the reinforcing resin liquid 11, and the guide roll 9 is impregnated with the reinforcing resin liquid 11. The reinforcing wire rod 7 is fed out at a predetermined tension from the top end to the bottom end of the existing concrete structure A, and is fed out continuously in one direction at a predetermined tension and at a predetermined pitch while adapting the reinforcing wire rod 7 to the outer surface of the existing concrete structure A. As a result, the existing concrete structure A can be given an earthquake reinforcement structure by winding the reinforcing wire 7.

That is, in the case of this embodiment configuration, the rotating ring 1.1 placed surrounding the existing concrete structure A is
Can it be attached to traveling device 2? By controlling the operation by setting the oblique angle θ and rotating the W motion control device 4, the reinforcing wire 7 can be continuously wound around the outer surface of the structure A at a predetermined pitch. A predetermined winding tension can be obtained by controlling the tension of the feeding device 5 during the sowing.

In the configuration of the above embodiment, a case has been described in which the inclination angle 0 given to the rubber wheels 2a, 2a of the traveling device 2 can be varied. Even if it is used, winding can be performed at the specified inclination angle, and the same operation and effect as the embodiment structure can be obtained.

〔Effect of the invention〕

As detailed above, according to the present invention, in an apparatus for winding reinforcing wire around the outer surface of a concrete structure,
The target structure is surrounded by a rotating ring that can be divided and combined, and a traveling bag is connected to the rotating ring via a telescopic arm. A drive wheel is provided that comes into contact with the outer surface, and the rotary ring can be controlled to move up and down in a spiral along the structure by the rotation of the drive wheel. A feeding device capable of feeding out the wire rod at a predetermined tension is provided so that the reinforcing wire rod to be fed out can be guided from the guide roll to the outer surface of the structure. It can be wound continuously at a tension of 1 pitch, and it is possible to strengthen the external surface of existing concrete structures, which are generally subject to various restrictions due to site conditions, by on-site work. The wire rod can be wound in an orderly manner and very easily as expected. Also, since the guide rail and each movable bag are linked via a telescoping arm, the guide rail can be wound by controlling the telescoping arm. By making it possible to sufficiently correspond to the cross-sectional size of the structure, and by making it possible to vary the inclination angle given to the drive wheel, the winding pitch interval can be adjusted, and the desired winding can always be achieved. It has excellent features such as being able to be implemented reliably.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing the general structure of an embodiment of the wire winding device according to the present invention, and FIG. 2 is an explanatory view of the operation of the traveling device portion of the same. A; Existing concrete structure B: Wire winding device 1.1, divided rotating ring 2.2; Moving device 2a, 2a; Rubber wheels 3.3
; Telescopic arm 4 that can vary the axial inclination angle; Drive control device 5; Feeding device 8; Pobbin 7;
Reinforcement wire 8; Braking mechanism 3; Guide roll lO: Resin impregnating device I+, Reinforced resin liquid 41F Applicant: Mitsubishi Chemical Industries, Ltd. (and 1 other person) Representative Patent attorney: Hasegawa - (and 1 other person) Figure 1 Figure 2

Claims (3)

[Claims] (1) A device for winding reinforcing wire around the outer surface of a concrete structure, which includes a rotating ring that can be divided and combined so as to surround the target structure, and a telescoping arm attached to the rotating ring. A traveling device that can control the vertical movement of the rotary ring in a spiral manner along the structure by using a drive wheel that is connected to the structure via a drive wheel and is brought into contact with the outer surface of the structure at a predetermined angle of inclination. and on the rotating ring,
Wire rod winding for a concrete structure, characterized in that a feeding device capable of feeding out the reinforcing wire rod with a predetermined tension is provided, and the reinforcing wire rod to be fed out can be guided from a guide roll to an outer surface of the structure. rotation device. (2) A wire rod winding device for a concrete structure according to claim 1, wherein the inclination angle given to the drive wheel can be variably set. (3) A resin impregnating device is provided on the traveling body so that the reinforcing wire fed out from the feeding device can be impregnated with the reinforcing resin. Wire winding equipment for concrete structures.