JPH0759854B2 - Wire winding device for concrete structure - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a wire rod winding device for shear reinforcement of a concrete structure, and more specifically, to an existing concrete structure, for example, a concrete column in a building. For example, the present invention relates to a device for winding a wire rod such as a reinforced fiber for the shear reinforcement.

<< Conventional Technology >> Conventionally, in order to impart earthquake resistance to this type of existing concrete structure, a steel plate, a welded wire mesh, a composite material of a strip plate and a mortar, and a strip plate are attached to the outer surface of the structure. A means for wrapping a reinforcing member such as a composite material of epoxy resin and epoxy resin to strengthen the shear has been proposed and implemented.

Here, for example, when the reinforcing member such as a steel plate is wound around the outer surface portion of the existing concrete structure to perform shear reinforcement, welding work of the steel plate or the like in the field, which is also a skill excellent in welding technology. It is indispensable for a reliable work by a person.Next, between the structure and the wound reinforcing member, cement mortar or the like is densely filled and integrally bonded, and the structure is externally added to the structure. The generated stress is effectively transmitted to the reinforcing member on the outer surface portion.

However, on the other hand, in such a shear reinforcement means for an existing concrete structure, the construction itself such as densely filling cement mortar and the like and integrally joining is complicated, and a part of the structure is also involved. When a crack occurs, stress is concentrated on the reinforcing member in the vicinity of the occurrence point, and there is a disadvantage that the strength of the reinforcing member cannot be fully utilized.

Accordingly, the present inventors have paid attention to this point, and first, a reinforcing wire material such as a fiber-reinforced plastic is kept wound on the outer surface portion of the structure in a well-fitted state, and is applied to the structure from the outside. Disperse and transmit stress to the wound reinforcing wire as quickly as possible, avoid stress concentration on the wire as a reinforcing member, and fully utilize the strength of the reinforcing wire.
We proposed a means to prevent the growth of cracks and thus the destruction of the structure.

<< Problems to be Solved by the Invention >> However, the winding of the reinforcing wire around the outer surface portion of the concrete structure according to the above-mentioned proposals of the present inventors,
Since the structure is an existing one and is subject to various restrictions on site conditions, it is extremely difficult to wind the reinforcing wire on the outer surface of this structure in an orderly manner by field work. There was a problem.

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

<< Means for Solving the Problems >> In order to achieve the above object, a wire winding device for a concrete structure according to the present invention includes a rotating ring that can be divided and connected so as to surround the structure. A base plate, a plurality of guide rods provided upright around the outer periphery of the rotary ring base plate, and guides that are vertically slidably fitted to the guide rods and that rotatably support the rotary ring base plate. A member, a taper plate fixed to the rotating ring base plate, fixed to the guide member on the rotational movement path thereof, and slidingly contacting a cam member that is constantly urged downward by a spring integrally with the guide member; With the sliding movement of the taper plate and the cam member, the guide member is moved up against the rotating ring base plate along the guide rod against the spring.
A lifting mechanism that moves the rotating ring base plate upward by a swingable lifting claw bar that is engaged with and disengaged from a serrated claw provided on the guide rod, and is swingable between the taper plate and the guide member. The descending pawl rod, which is swung by contact sliding with the lathe rod, is releasably separated from the pawl of the guide rod, and the rotating ring base plate descends while inclining by its own weight. And a lowering mechanism for lowering the rotating ring base plate,
A rotating mechanism for controlling the rotation of the rotating ring base plate to obtain a rotation operation is provided, and the rotating ring base plate can be spirally moved up and down in accordance with the structure by controlling the operation of the elevating mechanism and the rotating mechanism. In addition, a device for feeding the reinforcing wire rod with a predetermined tension is provided on the rotary ring base plate so that the fed-out reinforcing wire rod can be wound around the outer surface portion of the structure.

<< Operation >> That is, in the present invention, the rotating ring board disposed around the existing concrete structure is moved along the structure by the lifting operation control by the lifting mechanism and the rotation operation control by the rotation mechanism. Since the spiral wire is vertically movable, the reinforcing wire fed from the feeding device can be continuously wound around the outer surface of the structure at a predetermined pitch and tension.

Example An example of a wire winding device for a concrete structure according to the present invention will be described in detail below with reference to FIGS. 1 to 8.

FIG. 1 is a perspective view showing a schematic configuration of the apparatus of this embodiment, and FIGS. 2 to 6 are views showing an elevating mechanism provided in the apparatus of the embodiment, and FIGS. 7 and 8 are This is also a configuration explanatory view showing an enlarged rotary mechanism portion provided in the apparatus of the embodiment.

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

Thus, the wire rod winding device 1 has a rotating ring base plate 2 and an outer circumference of the rotating ring base plate 2 which are each separable by an arbitrary dividing surface 2a so as to be detachably attached to the outer periphery of the existing concrete structure. Individual guide rods 3 for vertically and vertically guiding and supporting at a plurality of points on the surface, for example, four points that have a balance and are excellent in safety, and a lifting mechanism for vertically moving the rotating ring base plate 2. A lowering mechanism, a rotating mechanism for rotating the rotating ring base plate 2, and a wire rod feeding device 7 mounted on the rotating ring base plate 2.

A guide member 4 for rotatably gripping the rotary ring base plate 2 is fitted on each of the guide rods 3.

Further, each of the guide rods 3 has a square cross section, and saw tooth-shaped claws 5, 5a are engraved on the left and right sides thereof. Furthermore, this guide rod 3
The front surface and the rear surface are formed as smooth surfaces that are compatible with the linear bearings provided on the guide member 4 side so that the guide member 4 can smoothly move up and down.

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

Further, the feeding device 7 for the reinforcing wire 6 such as carbon long fiber or aramid fiber mounted on the front rotary ring base plate 2 is provided with the bobbin 8 of the reinforcing wire 6, and the reinforcing wire 6 can be appropriately broken by a braking mechanism. The resin impregnating device 10 is made to be able to be fed out through the guide roller 9 with a predetermined tension, and as necessary.
The reinforcing wire 6 can be impregnated into the room temperature curable reinforced resin liquid filled with the above.

As the reinforcing wire 6, a conventionally known fiber-reinforced resin or the like may be used. For example, when a composite material in which an epoxy resin is reinforced with carbon fiber, glass fiber or the like is used,
This is very effective in that it can suppress the expansion and growth of cracks generated in the concrete structure in terms of high tensile strength and light weight, and as described above, the reinforcement fed from the feeding device 7 is also effective. By impregnating the wire rod 6 with a room temperature curing type reinforced resin liquid, the reinforcing wire rod 6 can be used in a supple and easy-to-handle state before curing.

Next, the details of the ascending mechanism, the descending mechanism, and the rotating mechanism of the winding device 1 will be described.

On both sides of the guide member 4, there are an ascending claw rod 12 and a descending claw rod 32 which are swingably attached by a hinge 11, and the tips of these claw rods 12, 32 are locked to the claws 5 of the guide rod 3. The guide member 4 is a nail rod.
12, 32 move up and down as the guide rod 3 moves up and down while repeatedly engaging and disengaging the claw 5. The swinging motion in which the claw rods 12, 32 engage and disengage from the claw 5 is obtained by the taper plate 13 fixed on the rotating ring base plate 2. The taper plate 13 rotates integrally with the rotating ring base plate 2, has a trapezoidal shape that is formed on an inclined surface that gradually increases rearward from the front end in the rotational direction, and is a wedge-shaped cam fixed to the front end of the guide member 4. It passes through the member 14 while sliding in contact therewith. The state is shown in plan view in FIG. 2, the side view is shown in FIG. 3, and AA ′ in the figure is shown.
The taper plate 13 and the cam member 14 are shown in FIG.
The movements with and are clarified below.

The front portion of the guide member 4 is U-shaped, and the rotary ring base plate 2 is rotated between the flange portions projecting forward. Then, a leaf spring is provided between the upper surface of the lower flange and the back surface of the rotary ring base plate 2.
15 is provided, and the leaf spring 15 is in contact with the back surface of the rotating ring base plate 2 and always supports the rotating ring base plate 2 while elastically urging it in the direction of pushing it up. The rotating ring base plate 2 that rotates is provided with a wear-resistant material such as a well-known Teflon resin (trade name) over the entire circumference of the rotating ring base plate 2 so as to correspond to the contact portion with the leaf spring 15. There is.

Then, the leaf spring 15 comes into contact with the rotary ring base plate 2 from the lower side, and the reaction member pushes the guide member 4 downward, and the lifting pawl 12 is locked to the pawl 5. The horizontal force for locking is obtained by the tension spring 16 provided between the middle portion of the lifting pawl 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, the tapered plate
While the inclined surfaces of 13 and the cam member 14 contact and slide,
While the taper plate 13 moves to the left, the cam member 14
Against the biasing force of the leaf spring 15 and push upward. At that time, the ascending claw rod 12 moves upward together with the guide member 4 and moves and locks with the claw 5 one step above the claw 5. The lower end of the lower claw rod 32 on the right side of FIG. 9B is fixed to the side surface of the guide member 4 by a pin 17 so as not to engage and disengage from the claw 5a. The right lowering claw rod 32 is used in the lowering mechanism described below, and the upper end thereof is fixed by the pin 17 in this manner so as not to operate in relation to the rising resistance when rising. It may be completely removed as shown in FIG.

The details of the descending mechanism are shown in FIGS. 5 and 6, in which each camber member 18 is applied to both ends of the back side of the leaf spring 15, and the camber member 18 is firmly restrained by L-shaped metal fittings 19 fixed to the guide member 4 with bolts. Then, the spring action of the leaf spring 15 is lost. In the descending operation, as will be described later, the descending of the rotating ring base plate 2 due to its own weight is utilized, and in such a configuration, the guide rod 3
If the leaf spring 15 is interposed between the guide member 4 supported by the guide member 4 and the rotary ring base plate 2 supported by the guide member 4 as it is, the weight of the rotary ring base plate 2 causes the leaf spring 15 to move when it descends. Since it becomes deformed, it becomes difficult to secure the relative lowering amount of the rotating ring base plate 2 with respect to the guide rod 3. Therefore, during the lowering operation, the leaf spring 15 is restrained to lose its action, and the operation stability of the lowering operation is stabilized. To ensure. Further, the upper part of the descending pawl rod 32 used for descending is provided with a protrusion 20 which is bent outward in a mountain shape. Further, the cam member 14 for operating the raising mechanism is removed. On the other hand, the tip end is brought into contact with the outer inclined surface of the protrusion 20 of the lowering claw rod 32, the middle portion is supported by the bearing 21 on the side surface of the guide member 4 so that the seesaw movement is possible, and the base end portion is tapered. A sludge rod 22 arranged so as to hit the is attached. At this time, the lifting claw rod 12 on the left side of FIG. 4 used in the lifting mechanism is connected to a bracket (not shown) mounted on the side surface of the guide member 4 with a pin in the hole 12a at the upper end of the lifting claw rod 12 so that the claw 5 Do not engage with or disengage completely so as not to interfere with the descending motion.

The base end portion and the tip end of the lathe rod 22 perform a seesaw motion around the location of the bearing 21. With the stopper (23a) extending in the direction of the seesaw, the movement direction of the seesaw of the lever (22) is limited to the movement from the horizontal position to the clockwise direction and the movement to return to the horizontal position.

Now, with the rotation of the rotating ring base plate 2, the taper plate
When 13 moves, it hits the base end of the lathe 22 and pushes it up. At that time, the tip end moves vertically downward with respect to the outer surface of the mountain-shaped projection 20 of the lowering claw rod 32. The descending claw rod 32 receives this downward movement force and overcomes the tensile force of the tension spring 16 by the hinge 11 to push the protrusion 20 back to the guide member 4 side, and the tip end is disengaged from the claw 5a of the guide rod 3. At this time, the rotating ring base plate 2 is supported by the guide rods 3 at the other three positions, but descends while being inclined by its own weight only with respect to the guide rod 3 from which the lowering pawl rod 32 is removed. . After that, the pulling spring 16 returns the lowering lever 32, and in synchronization with the passage of the taper plate 13, the lowering lever 32 on the lowering mechanism side is locked to the lower pawl 5. In order to perform this descending operation evenly between the guide rods 3 around the rotating ring base plate 2, it is necessary to securely engage the descending pawl rod 32 with the lower pawl 5a. The locking operation to the lower claw 5a is related to the descending speed of descending from the upper tooth 5a toward the lower tooth 5a and the one reciprocating swing speed of the descending pawl rod 32. It can be adjusted by design or experiment. Specifically, in consideration of the weight distribution in the circumferential direction of the rotary ring base plate 2, when the lowering pawl rod 32 is removed by one of the guide rods 5 while being supported by the other three guide rods 5. It can be adjusted in consideration of the descending speed of the rotating ring base plate 2 at the guide rod 5, the returning speed of the tension spring 16, the moving speed of the taper plate 13, and the like.

The above-mentioned ascending and descending mechanism is attached to each guide rod 3, and the taper plate is sequentially subordinated to the rotation of the rotating ring base plate 2.
Driven by 13.

Next, details of the rotating mechanism of the rotating ring base plate 2 are shown in FIGS. 7 and 8, and a rack is provided on the outer peripheral surface of the rotating ring base plate 2.
24 is engraved, and the pinion 25 is engaged with it. The pinion 25 is rotated integrally with the drive shaft 26 by a key 27 fitted in the axial direction of a drive shaft 26 that 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 vertically movable. Drive shaft
The base portion of 26 is connected to the motor 28 via a gear mechanism or the like, and transmits the rotational power of the motor 28 to the pinion 25, whereby the rotary ring base plate 2 can rotate.

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

In this way, with the rotation operation of the rotary ring base plate 2,
The reinforcing wire 6 of the feeding device 7 is impregnated with the reinforced resin liquid as it is or if necessary through the resin impregnation device 10, and is fed with a predetermined tension from the guide roller 9, and the reinforcing wire 6 of the existing concrete structure A is While adapting to the outer surface,
From the upper end to the lower end, it is possible to continuously wind in one direction with a predetermined tension and a predetermined pitch. As a result, the existing concrete structure A is seismic-resistant by winding the reinforcing wire 6. A reinforcing structure can be applied.

That is, in the case of the configuration of this embodiment, the rotating ring base plate 2 which is arranged around the existing concrete structure A and rotated by the rotating mechanism is operated by the elevating mechanism that performs the elevating operation according to the rotation of the rotating mechanism. By elevating and lowering, the reinforcing wire 6 is continuously wound at a predetermined interval pitch with respect to the outer surface portion of the structure A, and at the same time, the feeding device 7
A predetermined winding tension can be obtained by controlling the feeding tension.

<< Effects of the Invention >> As described in detail above, according to the present invention, in the device for winding the reinforcing wire on the outer surface portion of the concrete structure, the rotary ring base plate surrounding the target structure is provided,
A guide member is slidably mounted on each of the plurality of guide rods that have been set up, and a rotating ring base plate is rotatably supported on the guide rods.
An elevating mechanism that has a pinion to obtain an elevating operation proportional to the rotation control of the same drive shaft, and an operation control for each of these ascending and descending and rotation, makes the rotating ring base plate spiral along the structure. Since it can be moved, the reinforcing wire can be continuously wound around the outer surface of the concrete structure with a predetermined tension and a predetermined pitch, which generally limits the site conditions. A large number of existing concrete structures can be wound on the outer surface thereof with the reinforcing wire rods in an orderly and extremely easy manner by the site work. Also, since the wire feeding device is set on the rotating ring base plate that winds up the structure, it is not limited to the size of the cross section of the structure and can be sufficiently accommodated, and the rotating ring base plate can be rotated. It has an excellent feature that the desired winding operation can always be surely performed at a predetermined winding pitch by elevating and lowering by an elevating mechanism that ascends and descends according to the rotation of the mechanism.

[Brief description of drawings]

FIG. 1 is a perspective view showing a schematic structure of an embodiment of a wire winding device according to the present invention, FIGS. 2 to 4 are related to a lifting mechanism, and FIGS. 2 (a) and 2 (b) are plan views. Figures, FIG. 3 is a side view, and FIGS. 4 (a) and 4 (b) are views taken along line AA ′ of FIG.
5 is a side view showing a main part of the lowering mechanism, FIG. 6 is a rear view thereof, FIG. 7 is a schematic plan view showing a rotating 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 ... Reinforcing wire 7 ... Feeding device, 8 ... … Bobbin 9 …… Guide roller, 10 …… Resin impregnation device 11 …… Hinge, 12 …… Lifting claw bar 13 …… Tapered plate, 14 …… Cam member 15 …… Leaf spring, 16 …… Tension spring 17… … Pin, 18 …… Camber material 19 …… L-shaped metal fitting, 20 …… Projection 21 …… Bearing, 22 …… Sliding rod 23 …… Stopper, 24 …… Rack 25 …… Pinion, 26 …… Drive shaft 27… … Key, 28 …… Motor 29 …… Movement plate, 32 …… Down claw rod

Claims (2)

[Claims] 1. A device for winding a reinforcing wire on an outer surface of a concrete structure, wherein the structure comprises a rotating ring base plate which can be divided and connected so as to surround the structure, and the rotating ring base. A plurality of guide rods erected around the outside of the plate,
Each guide member that is vertically slidably fitted to each guide rod and rotatably supports the rotating ring base plate, and is fixed to the rotating ring base plate, and is attached to the guide member on the rotational movement path thereof. A taper plate which is fixed and constantly slides in contact with a cam member which is pressed downward integrally with the guide member by a spring, and a contact slide between the taper plate and the cam member, which resists the spring. A swingable lifting claw bar that is engaged with and disengaged from a serrated claw provided on the guide rod as the guide member is raised along the guide rod with respect to the rotating ring base plate. A lifting mechanism for moving the rotating ring base plate upward, and a descending pawl rod that is swung by contact sliding between the taper plate and a lever rod swingably provided on the guide member are the pawls of the guide rod. From the rotation release The lowering mechanism includes a lowering mechanism that lowers the rotating ring substrate by lowering it while inclining due to its own weight, and a rotating mechanism that enables rotation control of the rotating ring substrate to obtain a rotation operation. A device capable of vertically moving the rotating ring base plate in a spiral shape in accordance with a structure and a rotating mechanism in accordance with a structure and a device capable of feeding a reinforcing wire with a predetermined tension on the rotating ring base plate. A wire winding device for a concrete structure, wherein a reinforcing wire rod that is provided is wound around the outer surface of the structure. 2. The rotating mechanism comprises a drive shaft standing upright in a direction coaxial with a direction in which a rotary ring plate moves up and down, a power source for rotationally driving the drive shaft, and an axial direction of the drive shaft. A pinion slidably fitted to the drive shaft and a rack that meshes with the pinion are formed on the rotary ring base plate, and slidably contacted and locked on the rotary ring base plate, and the pinion is attached to the rotary ring base plate. A movable plate for locking the pinion vertically and guiding the pinion in the vertical direction.
A wire winding device for the concrete structure according to the item.