JPS638168A - Wire material winder for concrete structure - Google Patents

Abstract

PURPOSE:To wind a reinforcing wire material round the outside face of a structure easily and continuously by shifting the base of a rotary ring, which was arranged to surround the existing concrete structure, spirally in the vertical direction through an elevation control and a rotation control. CONSTITUTION:Plural fixed ring bases 1, 1 are arranged round the base section of the existing concrete structure A and plural (three) guide bars 3 are erected. A rotary ring base 2 is so engaged as to be free in elevation with the guide bars through guide members 13 and the base 2 is rotated in the arrow direction by the rotary mechanism 7 of a line material winder B. Further a driving axis 4 is rotated by a motor 20 and the winder B is elevated. A veering device 8 on the base 2 rotates the structure A while veering out a wire material 30. Hereby, the reinforcing wire material 30 is continuously and steadily wound at an optional pitch.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a wire winding device for shear reinforcement of concrete structures. This relates to a device for winding wire rods such as reinforcing m-fibers around beams and the like for shear reinforcement.

[Conventional technology]

Conventionally, in order to add earthquake resistance to this type of existing concrete structure, steel plates,
Means have been proposed and implemented to strengthen the shear by wrapping reinforcing members such as welded wire mesh, a composite material of a strip and mortar, and a composite material of a strip and epoxy resin.

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 present inventors focused on this point and first wound a reinforcing wire material such as fiber-reinforced plastic around the outer surface of the structure, and then added it to the structure from the outside. The stress caused by the reinforcing wire is dispersed and transmitted to the wound reinforcing wire as quickly as possible, avoiding stress concentration on the reinforcing wire, and making full use of the strength of the reinforcing wire to prevent crack growth. We proposed a means to prevent the structure from being destroyed.

[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 fixed ring base plate and a rotating ring base plate, each of which can be divided and combined so as to surround a target structure. and a plurality of guide rods planted on the fixed ring base plate, and each guide member that is vertically slidably fitted onto each guide rod and rotatably supports the rotating ring base plate. , an elevating mechanism having a drive screw shaft and a guide shaft installed in parallel on a base plate, and capable of rotationally controlling the drive screw shaft to obtain a lifting operation; and a lifting mechanism screwed onto the drive screw shaft; and is fitted onto the guide shaft so as to be slidable up and down,
and a rotation mechanism that enables rotational control of the rotary ring base plate to obtain rotational operation, and the rotary ring base plate can be moved up and down in a spiral along the structure by controlling the two rotations of the up and down movements. On the same rotary ring base plate,
A feeding device capable of feeding out the reinforcing wire with a predetermined tension is provided so that the feeding reinforcing wire can be wound around the outer surface of the structure.

[For production]

That is, in this invention, the rotating ring base plate placed surrounding the existing concrete structure is spirally shaped along the structure by the lifting and lowering operation control by the A-lowering mechanism and the rotational operation control by the rotating mechanism. Since it is made vertically movable, the reinforcing wire fed out from the feeding device can be continuously wound around the outer surface of the structure at a predetermined pitch and tension.

〔Example〕

EMBODIMENT OF THE INVENTION Hereinafter, one embodiment of the wire rod winding device for a concrete structure according to the present invention will be described in detail with reference to FIGS. 1 to 4.

FIG. 1 is a perspective view showing the general structure of this embodiment of the apparatus, and FIGS. 2 and 3 are elevational and descending views thereof.

FIG. 4 is an explanatory view showing the structure of the rotating mechanism part and the guide support part in an enlarged manner, and FIG. 4 is an explanatory view of the structure of the same wire rod feeding device.

In these Figures 1 to 4, 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. In the winding device, C is the floor surface.

Therefore, the wire rod winding device B can be attached to or detached from an arbitrary dividing surface 1a around the outer periphery of the existing concrete structure.
The fixed ring base plates 1 and 1 and the rotating ring base plates 2 and 2 are each made of each IAFI that can be divided at la, 2a, and 2a, and the rotating ring base plates 2 and 2 are connected to multiple locations 9 on the outer peripheral surface. In the case of 3, which has equilibrium property and has superior stability
-1- Individual guide rods 3 that guide and support the rotary ring base plates 2, 2 so as to be able to move up and down in the downward direction, a drive screw shaft 4, a support shaft 5, and a lifting mechanism 6 as a set for raising and lowering the rotary ring base plates 2, 2. , a rotating mechanism 7 for rotating the rotating ring base plate 2 2 , and a wire feeding device 8 installed on the rotating ring base plates 2 , 2 .

In this view, for the fixed ring base plates 1 and 1 consisting of the above-mentioned set, -1-plane 3 occupying equiangularly spaced positions on the same circumference -F
A support boss portion 11 is provided at each location, and the fixing ring base plates 1, 1 are once divided and then rebuilt to surround the existing concrete structure A. Connect them and install them on the floor C-.

The rotating ring base plates 2, 2 of the pair have a smaller diameter than the fixed ring base plates 1, 1, and have the same circumference.
- A rack gear 12 is formed all around the lower surface, and the rotating ring base plates 2, 2 are also once divided into -, with the existing concrete structure A as the center,
It is recombined so as to surround its periphery, and is initially prepared by stacking it on the fixed ring base plates 1, 1.

Next, each of the side guide rods 3 has a shaft portion 14 of the guide member 13 on its lever. +4, linear bearing 15
．． 15 so that it can be stably and smoothly slidably guided, and the base end of each is removably fitted and supported on each of the support bosses 11 of the fixed ring base plates 1 and 11 for implantation. The two lower guide portions 18.18 of each guide member 13 are held upright, and the peripheral edges of the rotary ring base plates 2, 2 are connected to a series of upper and lower linear bearings 16.
With the interposition of -L, it is fitted so as to be clamped from below, and in this state, the rotating ring base plates 2, 2 can be smoothly slidably guided in accordance with the rotation operation described later.

Further, the drive screw shaft 4 which is made into one set. The support shaft 5 is located on the base plate 18 of the A lowering mechanism 6, and is mounted on each of the drive screw shafts 4 with the base end rotatable and the base end of the support shaft 5 fixed. A worm gear 19 is fixed to the lower end of the drive screw shaft 4, and a motor 20 with a speed reducer that can control rotation is provided on the base plate 18-H as the lifting mechanism 6. 20 output worm shafts 21 are meshed with the worm gear 19, and the drive screw shaft 4 can be rotationally driven by the controlled rotational output thereof.

Further, the rotation mechanism 7 is located at a position corresponding to the drive screw shaft 4 and the support shaft 5, and the rotation mechanism 7 is located at a position corresponding to the drive screw shaft 4 and the support shaft 5.
3 and 24, and the drive screw shaft 4 is screwed into the former shaft portion 23 via, for example, a pole screw bearing 25 that can perform smooth screw feeding operation. , the latter shaft portion 24 has a linear bearing 26
The support shaft 5 is fitted through the support base plate 22 so as to be slidably guided stably and smoothly, and a motor 27 with a speed reducer that can control rotation is provided on the support base plate 22.
The output pinion gear 28 of this motor 27 is meshed with the rack gear 12 of the rotary ring base plates 2, 2, so that the rotary ring base plates 2, 2 can be rotationally driven by its controlled rotational output. .

As you can see, for said motor 20.27, e.g.
Power is supplied from an external power source via a cable or the like, or from an appropriately mounted battery power source.

Further, the feeding device 8 mounted on the rotating ring base plates 2, 2 is equipped with a bobbin 29 of a reinforcing wire 30,
The reinforcing wire 30 is made to be fed out through the guide roll 31 with a predetermined tension by an appropriate braking mechanism, and if necessary, the reinforcing wire 30 is impregnated with a cold-setting reinforcing resin liquid 33 filled in a resin impregnating device 32. It was designed so that it could be done.

Note that as the reinforcing wire 3o, a conventionally known fiber-reinforced resin or the like may be used. For example, when using a composite material made of epoxy resin reinforced with carbon fiber, glass fiber, etc.,
This is extremely effective in that it has high tensile strength and is lightweight, and can suppress the expansion and growth of cracks that occur in concrete structures. By impregnating the wire 3o with a room temperature curing reinforcing resin liquid 33,
This reinforcing wire 30 can be used in its pliable and easy-to-handle state before hardening.

Therefore, in the device configuration according to this embodiment, in the above state, first, the drive screw shaft 4 is driven to rotate at a relatively high speed by the motor 20 of the lifting mechanism 6, so that the rotary ring base plates 2, 2 are rotated at a relatively high speed. Once.

Quickly move it in a straight line to the 1st end position of structure A,
The end of the reinforcing wire 30 fed out from the feeding device 8 on the rotating ring base plates 2, 2 is appropriately attached to a part of the outer surface of the upper end of the target concrete structure A.

Next, this time, the motor 20 of the lifting mechanism 8. By driving both the motor 27 of the rotation mechanism 7 at a controlled rotation speed, the motor 20 moves the support base plate 22 of the rotation mechanism 7 to the support shaft as the drive screw shaft 4 spirals at a predetermined speed. 5, and then gradually lower the rotating ring base plates 2, 2 along each guide rod 3 (R),
In addition, in the motor 27, the rotation of the pinion gear 28 at a predetermined speed causes the rotary ring base plates 2, 2 to rotate in a state supported by each guide member 13 via the rack gear 12, and these For each operation, i.e., the downward nine-rotation operation relative to the rotary ring base plate 2,2, this rotary ring base plate 2,2 wraps around said structure A to achieve the desired lead angle, i.e., the spiral It is rotated spirally downward at the corner.

Therefore, along with the rotational movement of the rotating ring base plates 2, 2,
The reinforcing wire rod 30 of the feeding device 8 is impregnated with a reinforcing resin liquid 33 as it is or, if necessary, via a resin impregnating device 32, and fed out from the guide roll 31 with a predetermined tension.
This reinforcing wire 30 can be wound continuously in one direction from the upper end to the lower end at a predetermined tension and at a predetermined pitch while adapting to the outer surface of the existing concrete structure A. As a result, the existing concrete structure A can be provided with an earthquake-resistant reinforcement structure by winding the reinforcing wire 7.

That is, in the case of this embodiment configuration, the rotating rings 2, 2 arranged surrounding the existing concrete structure A,
Due to the R disturbance and the rotational speed fltlJll applied to the lifting mechanism 6 and the rotating mechanism 7, the reinforcing wire 30 is continuously wound at a predetermined pitch on the outer surface of the structure A, and at the same time A predetermined winding tension can be obtained by controlling the unwinding tension in step 8.

In the configuration of the above embodiment, the driving screw rod in the lifting mechanism 6 is driven by the meshing means between the worm gear 18 and the war shaft 21, and the rotating ring base plate 2 by the rotating mechanism is used.
.

〔Effect of the invention〕

As detailed above, according to the present invention, concrete 1
- In a device for winding reinforcing wire on the outer surface of a structure, a fixed ring base plate and a rotating ring base plate surrounding the target structure are provided, and multiple wires planted on the fixed ring base plate are provided. Each of the guide rods is fitted with a guide member so as to be slidable up and down to rotatably support the rotary ring base plate, and also has a drive screw shaft and a guide shaft installed in parallel. , an elevating mechanism that obtains an elevating operation by controlling the rotation of the drive screw shaft; and a lifting mechanism that is screwed to the drive screw shaft and slidably fitted to the guide shaft, and rotates the rotary ring base plate. A rotary mechanism that can be operated under control is provided, and the rotating ring base plate can be moved spirally along the structure by controlling the lifting, lowering, and rotating operations of these mechanisms, so that the outer surface of the concrete structure The reinforcing wire can be wound continuously at a predetermined tension and at one pitch, and can be applied to existing concrete structures, which are generally subject to various constraints due to site conditions, by on-site work. The reinforcing wire can be wound around the outer surface in an orderly manner and extremely easily, and since the wire feeding device is installed on the rotating ring base plate-L that covers the structure, it is especially easy to wind. It is not limited to the cross-sectional size of the structure, and can be fully accommodated, and furthermore, it can be lifted up and down 9
It has excellent features such as being able to arbitrarily adjust the winding pitch interval by simply controlling both rotational operations and ensuring the desired winding is always carried out.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing the general configuration of an embodiment of the wire winding device according to the present invention, and FIGS. 2 and 3 are enlarged views of the lifting/lowering one-rotation mechanism portion and the guide support portion. FIG. 4 is an explanatory diagram of the configuration of the same two-wire rod feeding device. A; Existing concrete structure B: Wire rod winding device 1, 1; Divided fixed ring base plate 2.2; Divided rotating ring base plate 3: Guide rod 4; Drive screw shaft 5; Guide shaft 6: Lifting Mechanism 7; Rotating mechanism 8; Feeding device 11; Rack gear 13. Guide member 18; base plate 18;
Worm gear 20, motor 21. Worm shaft 22; Support plate 27; Motor 28; Pinion gear 29; Pobin 30; Reinforcement wire 31; Guide roll 32; Resin impregnation device 33; Reinforced resin liquid patent applicant Mitsubishi Chemical Industries, Ltd. (and one other person) Agent Patent attorney Hasegawa - (1 other person) Figure 3

Claims (2)

[Claims] (1) A device for winding reinforcing wire around the outer surface of a concrete structure, which includes a fixed ring base plate and a rotating ring base plate that can be divided and combined so as to surround the target structure. and a plurality of guide rods planted on the fixed ring base plate, and each guide member that is vertically slidably fitted onto each guide rod and rotatably supports the rotating ring base plate. , an elevating mechanism having a drive screw shaft and a guide shaft installed in parallel on a base plate, and capable of rotationally controlling the drive screw shaft to obtain a lifting operation; and a lifting mechanism screwed onto the drive screw shaft;
and a rotation mechanism that is fitted on the guide shaft so as to be slidable up and down, and that enables rotation control of the rotary ring base plate to obtain a rotational operation, and the rotational ring base plate can be rotated by controlling the vertical and rotational operations. The plate can be moved up and down in a spiral along the structure, and a feeding device capable of feeding out the reinforcing wire at a predetermined tension is provided on the rotary ring base plate, and the reinforcing wire to be fed out can be moved up and down in a spiral manner. A wire winding device for a concrete structure, characterized in that the wire can be wound around the outer surface of the structure. (2) A wire rod winding device for a concrete structure according to claim 1, wherein the reinforcing wire rod fed out from the feeding device can be impregnated with a reinforcing resin.