JPS63194071A - Wire material winding apparatus in concrete structure - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

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, and more particularly, to a wire winding device for shear reinforcement of concrete structures. This relates to a device for winding wire rods such as reinforcing fibers around cleat columns and the like for shear reinforcement.

(Prior art) Conventionally, in order to impart earthquake resistance to this type of existing concrete structure, steel plates, welded wire mesh, a composite material of strips and mortar, and strips have been applied to the outer surface of the structure. A method of wrapping a reinforcing member such as a composite material of epoxy resin and epoxy resin to strengthen the shear strength has been proposed and implemented.

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 to do so by a person with excellent welding skills. It is essential that the work be carried out reliably by a qualified person, and then cement mortar or the like is densely filled between the structure and the reinforcing members wrapped around them, and they are joined together to prevent any additions to the structure from the outside. This is to effectively transmit the stress applied to the reinforcing member on the outer surface.

However, with such shear reinforcing methods for existing concrete structures, the construction itself is complicated, such as densely filling cement mortar etc. and bonding them together. When a crack occurs, stress concentrates 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 left the reinforcing wire material such as m-irregular plastic wrapped around the outer surface of the structure, and then wrapped it around the structure from the outside. The applied stress 4 is dispersed and transmitted to the wound reinforcing wire as quickly as possible, avoiding stress concentration on the wire as a reinforcing member, and fully utilizing the strength of the reinforcing wire.
We proposed a means to prevent crack growth and, ultimately, structure destruction.

(Problems to be Solved by the Invention) However, as proposed by the present inventors, the winding of reinforcing wire around the outer surface of a concrete structure is difficult.
Since the structure is an existing structure and is subject to various constraints on site conditions, it is extremely difficult to wind reinforcing wire around the outside of the structure in an orderly manner as planned during site work. There was a problem.

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

(Means for Solving the Problems) In order to achieve the above object, the wire winding device for a concrete structure according to the present invention can be divided and combined so as to surround the structure. A rotary ring base plate, a plurality of guide rods erected around the outer circumference of the rotary ring base plate, and each guide rod is fitted into each guide rod so as to be vertically slidable, and rotatably supports the rotary ring base plate. Each guide member, a tapered plate that slides in contact with a cam member that is fixed to the rotating ring, is fixed to the guide member on its rotational movement path, and is constantly pressed downward together with the guide member by a spring; The guide rod is provided with a lifting mechanism in which the rotary ring is moved upward by the engagement and disengagement action of the pawl rod, which is engaged and disengaged from the serrated pawl provided on the guide rod, which is swung up and down, and a tapered plate provided on the guide rod. The elevating mechanism 1 is provided with a lowering mechanism 11 in which the rotary ring is gradually lowered by a locking rod that is swingably engaged and disengaged from a pawl, and a rotation mechanism that enables rotation control of the rotary ring and obtains rotational operation. By controlling each operation of the rotation mechanism, the rotating ring base plate can be moved up and down in a spiral pattern according to the 4M structure, and a device is installed on the rotating ring base plate that can feed out reinforcing wire at a predetermined tension. The reinforcing wire that is fed out is wound 19 around the outer surface of the structure.

(Function) In other words, in this invention, the rotating ring base plate placed surrounding the existing concrete structure is aligned with the structure by controlling the lifting and lowering operations by the lifting mechanism and by controlling the rotational operation by the rotating mechanism. Since the reinforcing wire can be moved up and down in a spiral manner, 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.

(Embodiment) 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 8.

Fig. 1 is a perspective view showing the general configuration of this embodiment device, Figs. 2 to 6 are views showing the elevating mechanism, and Figs. 7 and 8 are enlarged views of the rotating mechanism. FIG.

In FIG. 1, reference numeral A denotes an existing concrete structure to be wound, in this case a column member having a square cross section, and 1 is a wire rod winding device according to this embodiment.

Therefore, the navigation wire winding device 1 includes a rotary ring base plate 2 that can be divided at any dividing plane so that it can be attached to and detached from the outer circumference of an existing concrete structure, and a rotary ring base plate 2 that can be attached to and detached from the outer circumference of an existing concrete structure. Individual guide rods 3 that are guided and supported in a vertically movable manner at a plurality of locations, in this case, four locations that are balanced and provide safety, and a lifting mechanism for operating the rotating ring base plate 2 to move up and down. , descending mechanism, and rotating ring base plate 2
a rotating mechanism for rotating the ring, and a rotating ring base plate 2.
It has a wire rod feeding device 7 installed thereon.

A guide member 4 for gripping the rotating ring base plate 2 is fitted into each of the guide rods 3 on the sides.

Further, each guide rod 3 has a square cross section, and serrated pawls 5, 5a are carved on the left and right sides thereof.

Furthermore, the front and rear surfaces are formed into smooth surfaces that are compatible with linear bearings so that the guide member 4 can move up and down smoothly.

In this way, the rotating ring base plate 2 is rotatably supported by the guide member 4 and vertically movably supported by the guide rod 3.

Furthermore, the carbon length m mounted on the rotating ring base plate 2 is
A device 7 for feeding a reinforcing wire 6 made of N, aramid uAIIt, etc. is equipped with a bobbin 8 for the reinforcing wire 6, and a braking mechanism is used as appropriate to allow the reinforcing wire 6 to be fed out through a guide roller 9 with a predetermined tension. In addition, if necessary, the resin impregnation device 10 can be impregnated by passing through a room-temperature curing reinforcing resin liquid.

As the reinforcing wire 6, conventionally known fiber-reinforced resin may be used. For example, when using a composite material made of epoxy resin reinforced with carbon fiber, glass fiber, etc., this material has high tensile strength and is lightweight. It is effective in that it can suppress the expansion and growth of cracks that occur in concrete structures, and as mentioned above,
By impregnating the reinforcing wire 6 fed out from the feeding device 7 with a reinforcing resin liquid that hardens at room temperature, the reinforcing wire 6 can be used in its pliable and easy-to-handle state before curing.

Next, details of the raising mechanism, lowering mechanism, and rotating mechanism of the wood winding device 1 will be described.

On both sides of the guide member 4, there are pawl rods 12 that are swingably attached to hinges 11, and the tips of the pawl rods 12 touch the pawls 5 of the guide rod 3.
to be locked. The guide member 4 moves in the vertical direction as the guide rod 3 moves up and down while the pawl rod 12 repeatedly engages and disengages from the pawl 5. The rocking motion of the pawl rod 12 engaging and disengaging from the pawl 5 is as follows:
It is obtained by a taper plate 13 fixed on a rotating ring base plate 2.

The tapered plate 13 rotates together with the rotary ring base plate 2, and has a trapezoidal shape with an inclined surface whose front end in the rotation direction gradually becomes higher, and has a wedge-shaped cam member 14 fixed to the front end of the guide member 4. It passes while sliding in contact with the object. The movement of the taper plate 13 and the cam member 14 is shown below, with Fig. 2 showing the situation in plan view, Fig. 3 showing the side view, and Fig. 4 showing the A-A' arrow view in the figure. be clear.

The front part of the guide member 4 has a U-shape, and the rotary ring base plate 2 rotates between the collar parts projecting forward. A leaf spring 15 is provided between the upper surface of the lower collar and the back surface of the rotary ring base plate 2, and this leaf spring 15 always acts in a direction to push up the rotary ring base plate 2.

That is, the guide member 4 is pushed down by the reaction force, and the pawl rod 12 is engaged with the pawl 5. This locking horizontal force is obtained by a tension spring 16 interposed between the midway part of the pawl rod 12 and the side surface of the guide member 4.

As shown in FIG. 4<a>, as the rotary ring base plate 2 rotates, the taper plate 13 continues to move from the right side to the left side and hits the cam member 14.

Then, while the inclined surfaces of the taper plate 13 and the cam member 14 slide into contact with each other, the taper plate 13 moves to the left and pushes the cam member 14 upward against the biasing force of the leaf spring 15. . At this time, the pawl rod 12 moves upward together with the guide member 4, and moves and locks onto the tooth of the pawl 5 one step above. The upper end of the right claw rod 12 in FIG. 2B is fixed to the side surface of the guide member 4 with a pin 17 so that it does not engage or disengage from the claw 5a. This right hand lever 12 is used for the lowering mechanism which will be explained next, and due to the rising resistance, the upper end is fixed with the pin 17 to prevent it from operating when rising. In the figure (a
), it may be removed completely.

Details of the lowering mechanism are shown in FIGS. 5 and 6. Each camber material 18 is applied to both ends of the back surface of the leaf spring 15, and the camber material 18 is firmly secured with an L-shaped metal fitting 19 fixed to the guide member 4 with a bolt. The leaf spring 15 is held at its maximum biasing position.

Further, the upper part of the pawl rod 12 used for lowering is provided with a protrusion 20 that is bent outward into a chevron shape. Furthermore, the cam member 14 for operating the lifting mechanism is not removed. On the other hand, the tip is brought into contact with the outer inclined surface of the protrusion 20 of the pawl rod 12, the middle part is supported on the side surface of the guide member 4 by a bearing 21 to enable seesaw movement, and the base end is brought into contact with the tapered plate 13. A horizontal rod 22 is installed.

The base end and tip of the horizontal rod 22 perform seesaw movement centering on the bearing 21, but the stopper 23 extending from the side of the guide member 4 to the lower surface of the base end of the horizontal rod 22 and the With the stopper 23a extending to the upper surface of the tip side, the horizontal rod 22
The seesaw movement direction of is limited to clockwise movement from the horizontal position and movement back to the horizontal position.

Now, when the taper plate 13 moves as the rotary ring base plate 2 rotates, it hits the base end of the horizontal rod 22 and pushes it up. At this time, the tip moves in the vertical direction while applying a vertical force to the outer surface of the chevron-shaped protrusion 20 of the claw rod 12. The pawl rod 12 receives the above-mentioned vertical force, and the hinge 11 overcomes the tensile force of the tension spring 16, and the protrusion 20 is pushed back toward the guide member 4, and the tip is removed from the pawl 5a of the guide rod 3. As a result, the pawl rod 12 on the lowering mechanism side moves and locks with the tooth one tooth below in synchronization with the passage of the taper plate 13.

The above-mentioned lifting and lowering mechanisms are attached to each guide rod 3 and are sequentially driven by the tapered plate 13 in accordance with the rotation of the rotary ring base plate 2.

Next, the details of the rotation mechanism of the rotating ring base plate 2 are shown in FIGS. It's matching. This pinion 25 is rotated integrally with the drive shaft 26 by a key 27 fitted in the axial direction of the drive shaft 26, which is erected in the same axial direction as the direction in which the guide rod 3 guides the rotating ring base plate 2 up and down. and is set on the drive shaft 26 so as to be movable up and down. The base of the drive shaft 26 is connected to a motor 28 via a gear mechanism or the like, and transmits the rotational power of the motor 28 to the pinion 25, thereby allowing the rotating ring base plate 2 to rotate.

A moving plate 29 is provided above and below the pinion 25,
The ends of the movable plate 29 are in contact with the upper and lower surfaces of the rotary ring base plate 2, and the pinion 25 is moved up and down along the axial direction of the drive shaft 26 in accordance with the rise and fall of the rotary ring base plate 2.

In this way, with the rotational movement of the rotating ring base plate 2,
The bare reinforcing wire rod 6 is impregnated with a reinforcing resin liquid through the resin impregnating device 10 as it is or as required, and is fed out from the guide roller 9 with a predetermined tension, and this reinforcing wire rod 6 is
While adapting to the outer surface of the existing concrete structure A, it can be rolled continuously in one direction from the upper end to the lower end with a predetermined tension and a predetermined interval pitch, and as a result, the existing concrete The structure A can be provided with an earthquake-resistant reinforced structure by winding the reinforcing wire 6.

That is, in the case of this embodiment configuration, the rotating ring base plate 2 placed surrounding the existing concrete structure A is
Only by controlling the rotational speed of the motor 28, the reinforcing wire 6 is continuously wound at a predetermined interval pitch with respect to the outer surface of the structure A, and at the same time, by controlling the feeding force of the feeding device 7, This results in a winding tension of .

(Effects of the Invention) As described in detail above, according to the present invention, in an apparatus for winding reinforcing wire around the outer surface of a concrete structure, a rotating ring base plate surrounding a target structure is provided,
A guide member is fitted to each of the planted guide rods so as to be slidable up and down to rotatably support a rotating ring base plate, and a drive shaft that is planted parallel to each other,
An elevating mechanism that has a pinion and obtains an elevating operation proportional to the rotation control of the driving drive shaft, and the elevating and lowering operation control of these operations, as well as the rotational movement control, allows the rotating ring base plate to spiral along the structure. Since the reinforcing wire rod can be moved around the outer surface of the concrete structure, it is possible to continuously wind the reinforcing wire rod at a predetermined tension and a pitch of 2 intervals, which is generally subject to various restrictions due to site conditions. By on-site work, reinforcing wire can be wrapped around the external surface of an existing concrete structure, which has a large number of structures, in an orderly manner and extremely easily. In addition, since the wire feeding device is set on the rotating ring base plate that covers the structure, it is not particularly limited by the cross-sectional size of the structure, and can be fully adapted to the size of the structure.
Furthermore, it has excellent features such as the ability to always perform the desired winding while adjusting the winding pitch as desired by simply controlling the rotational operation of the rotary ring base plate. be.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing the general configuration of one embodiment of the wire winding device according to the present invention, FIGS. 2 to 4 relate to the lifting mechanism, and FIGS. 2(a) and 2(b) are plan views. Figure 3 is a side view, Figures 4 (a) and (b) are views taken along the line A-A-,
FIG. 5 is a side view showing essential parts of the lowering mechanism, FIG. 6 is a rear view thereof, FIG. 7 is a schematic plan view showing the rotation mechanism, and FIG. 8 is a side view thereof. A... Concrete structure 1...
...Wire winding device 2...Rotating ring base plate 3...Guide rod 4...
...Guide member 5 ......Claw
6・・・・・・・・・Reinforcement wire 7・・・・・・・・・
Feeding device 8...Bobbin 9...
...Guide roller 10 ...Resin impregnating device 11 ...Hinge 12 ...Claw rod 13 ...Taper plate 14.
...Cam member 15...Plate spring 16
...Tension spring 17...Bin 1
8...Camber material 19...L-shaped metal fitting 20...Protrusion 21...Bearing 22...Rawl rod 23...・・・・・・
Stopper 24...Rack 25...
... Pinion 26 ... Drive shaft 27 ... Key 28 ... Motor 29 ... Moving plate Patent applicant Mitsubishi Chemical Industries, Ltd.
Osamu Obayashi Co., Ltd.
Patent attorney - Kensuke Shiro
Patent Attorney Masatoshi Matsumoto Figure 2 (a) (b) Figure 3

Claims (2)

[Claims] (1) A device for winding reinforcing wire around the outer surface of a concrete structure, which includes a rotating ring base plate that can be divided and combined so as to surround the structure; a plurality of guide rods erected around the outer periphery; each guide member fitted into each of the guide rods so as to be vertically slidable and rotatably supports the rotary ring base plate; and fixed to the rotary ring; a tapered plate that slides in contact with a cam member that is fixed to the guide member on its rotational movement path and that is constantly pressed downward together with the guide member by a spring; a lifting mechanism in which the rotary ring is moved upward by the engagement and disengagement action of a pawl rod that is engaged with and disengaged from a serrated pawl provided on the guide rod that is moved; and a lifting mechanism provided on the guide rod by the tapered plate A lowering mechanism in which the rotary ring is gradually lowered by a locking rod that swings into and out of the pawl, and a rotation mechanism that enables rotational control of the rotary ring base plate to obtain rotational operation, By controlling the respective operations of the mechanism and the rotation mechanism, the rotating ring base plate can be moved up and down in a spiral manner according to the structure, and a device is installed on the rotating ring base plate that can feed out the reinforcing wire with a predetermined tension. A wire rod winding device for concrete and a structure, characterized in that the reinforcing wire rod can be wound around the outer surface of the structure. (2) The rotation mechanism includes a drive shaft installed coaxially with the direction in which the rotation ring moves up and down, a power source that rotationally drives the drive shaft, and a drive shaft that is slidable along the axial direction of the drive shaft. A pinion fitted to the drive shaft and a rack that meshes with the pinion are formed on the rotary ring, and are slidably contacted and engaged with the rotary ring, and are integrally engaged with the pinion so that the pinion A wire rod winding device for a concrete structure according to claim 1, further comprising a movable plate that guides the wire rod in the vertical direction.