JP3497493B2 - Curing protection device for concrete corners - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a curing protection device for a corner portion of a concrete skeleton.

[0002]

2. Description of the Related Art FIG. 11 shows a mold fixing rod 1 and a mold fixing tool 2 for constructing concrete frames such as columns and walls.
FIG. 7 is a partially cut side view showing a state in which the left and right molds 3 and 3 are assembled by and.

The mold fixing rod 1 is used by selecting one having a length corresponding to the thickness dimension of the concrete frame to be constructed, and male screw portions 4 are provided at both ends of the mold fixing rod 1. Has been formed.

As shown in FIG. 12, the mold fixing tool 2 is composed of a mold positioning piece 5, a tightening rod 6, a pressing tool 7, and a tightening nut 8.

The mold frame positioning piece 5 has a nut 10 having an open female threaded portion 9 at one end which is screwed onto the male threaded portion 4 of the mold fixing rod 1. A frustoconical positioning member 11 having a small outer diameter on the opening side of the female screw portion 9 and a large diameter toward the opposite side of the opening is integrally fixed to the outer periphery of the nut 10, and the positioning is further performed. At the center of the member 11, a bolt portion 1 is integrally formed with the nut 10 and extends a required length toward the side opposite to the opening of the female screw portion 9.
Equipped with 2. At this time, the positioning member 11 of the mold frame positioning piece 5 is generally formed of a synthetic resin in a truncated conical tubular shape, and the other members are formed of metal such as steel.

The tightening rod 6 has a female screw portion 13 at one end which is screwed into the bolt portion 12 of the mold positioning piece 5, and the other end of the tightening rod 6 has a required length. The male screw portion 14 is formed. Further, a pressing seat 15 is formed on the outer peripheral portion of the female screw portion 13 of the tightening rod 6,
An engaging portion 6a for rotating the tightening rod 6 is formed at a required position of the tightening rod 6 by a tightening tool such as a spanner.

The pushing tool 7 is fitted into the tightening rod 6 through the opening 16, and further, as shown in FIG. 11, two pipe members 17 for pressing and supporting the outer surface of the mold 3 are supported. Is provided on both sides.

The tightening nut 8 is screwed into the male screw portion 14 of the tightening rod 6 to press the pushing tool 7.

The operation of assembling the molds 3 and 3 by the mold fixing rod 1 and the mold fixing tool 2 will be described with reference to FIGS.
2 will be described.

First, a mold fixing rod 1 having a length corresponding to a thickness dimension of a pillar or a wall to be constructed is prepared. At this time, the female screw portions 9 of the mold frame positioning piece 5 are screwed and attached to the male screw portions 4 on both ends of the mold frame fixing rod 1, so that the positioning member 11 of the mold frame positioning piece 5 has a large size. Since the mutual distance S between the radial end portions is the thickness of the concrete skeleton to be constructed, the distance S is adjusted by screwing in the formwork positioning piece 5.

The bolt portions 12 of the mold frame positioning piece 5 provided at both ends of the mold fixing rod 1 are passed through the openings 3a formed in the left and right mold frames 3 and 3 at predetermined intervals. Then, the female screw portion 13 of the tightening rod 6 is screwed onto the tip of the bolt portion 12 penetrating the molds 3 and 3, and the tightening rod 6 is rotated by engaging a spanner or the like with the engaging portion 6a. By doing so, the molds are clamped, and the molds 3 and 3 are clamped by the mold positioning piece 5 and the tightening rod 6.

Next, two pipe members 17 are applied to the outer surfaces of the molds 3 and 3, and a pushing tool 7 is applied to push the pipe members 17 from the outside, and the male screw portion 14 of the tightening rod 6 is screwed. Make sure to tighten the combined tightening nut 8. Then, the molds 3 and 3 are firmly supported via the pusher 7 and the pipe member 17 so as not to be curved outward. The molds 3 and 3 are connected by the mold fixing rod 1 and the mold fixing tool 2 at a plurality of openings 3a formed at required intervals, whereby the molds 3 and 3 are separated by a distance S. It is assembled with high strength while maintaining the space.

Fresh concrete is poured between the molds 3 and 3 assembled in this way.

After pouring the ready-mixed concrete and after the required solidification time has elapsed, the work of removing the molds 3 and 3 is performed as follows.

First, after loosening the tightening nut 8 and loosening the pusher 7, the two pipe members 17 are removed, and then the tightening rod 6 is rotated to move the bolt portion 12 of the mold frame positioning piece 5 to the tightening rod. 6, the molds 3 and 3 are extracted from the bolt portion 12, and the mold 3 is removed.

Next, by grasping the bolt portion 12 with a finger and turning it,
Alternatively, the mold positioning piece 5 is removed from the male screw portion 4 of the mold fixing rod 1 by engaging and turning a tool on the nut 10 inside the mold positioning piece 5. As a result,
3, the concrete frame 19 is exposed as shown in FIG.

At this time, on the surface of the concrete skeleton 19, a frustoconical recess 20 formed by the mold positioning piece 5 is formed.
Are formed at required intervals, and the male screw portion 4 of the mold fixing rod 1 is projected at a required length at the bottom of each recess 20.

While the concrete skeleton 19 constructed in this manner is being cured, the peripheral work inside the room, etc. will proceed, but a worker collides with the corner portion 21 of the concrete skeleton 19 and is injured. In addition, there is a danger that the corner portion 21 is easily damaged when a worker or a carrier material collides, and when the corner portion 21 is damaged, the repair work of the corner portion 21 is very difficult.

For this reason, after the concrete skeleton 19 is constructed, the corner portion 21 of the concrete skeleton 19 is covered to buffer the collision of the worker or the carrier equipment, and the corner portion 21 is used by the worker or the carrier material. In order to prevent damage due to the collision, the L-shaped protective material such as a vinyl chloride plate is attached to the corner portion 21 to perform curing and protection.

FIG. 13 and FIG. 14 show an example of the prior art, in which an L-shaped protective material 22 such as a vinyl chloride plate is arranged in a corner portion 21 of a concrete skeleton 19 and the L-shaped protective material 22 is provided. Are fixed using a wire 23 and a band-shaped rubber 24.

That is, the belt-shaped rubber 24 has a required length and is formed with annular portions 25 at both ends thereof, and the male screw portion 4 protruding to the bottom of the recess 20 at the position where the corner portion 21 is sandwiched. The annular portions 25 at both ends of the rubber band 24.
The end of the wire 23 passed through is wound and fixed. As a result, the L-shaped protective material 22 is fixed to the corner portion 21 of the concrete frame 19 via the belt-shaped rubber 24.

On the other hand, FIG. 15 shows another conventional example, in which both width ends of the L-shaped protective material 22 arranged at the corner portion 21 of the concrete frame 19 are connected to the concrete frame 19.
The adhesive tape 26 (gum tape) is directly attached and fixed on the surface of the.

[0023]

However, FIG. 13 and FIG.
As shown in FIG. 4, in the method of fixing the L-shaped protective material 22 to the corner portion 21 of the concrete skeleton 19 using the strip-shaped rubber 24 and the wire 23, both ends of the strip-shaped rubber 24 are fixed to the wire 2
Since it is fixed by winding it around the male screw part 4 in the recess 20 by using 3, there is the following problem.

That is, the concave portion 20 formed on the surface of the concrete skeleton 19 has a small diameter of about 30 mm on the large diameter side and a depth of about 25 mm, and the male screw portion 4 protruding from the bottom of the concave portion 20. The length of the male screw portion 4 is about 12 mm and is a short length located in the recess 20.
It is very difficult to wind and fix the wire 23 on the
Since it cannot be fixed with high strength, the stability is low and the wire 23
There is a risk that the screw will come off the male screw part 4.

Further, since it is difficult to wind and fix the wire 23 around the male screw portion 4, it takes a lot of time and labor and the work efficiency is very poor. Further, in order to ensure the safety of the worker, it is necessary to process the wire 23 so that the end of the wire 23 does not project to the outside when the wire 23 is wound around the male screw part 4 and fixed, which further reduces the work efficiency. Was. Further, even when the L-shaped protective material 22 is removed from the corner portion 21 of the concrete skeleton 19, there is a problem that the work is troublesome and inefficient because the fixation by the wire 23 is removed.

On the other hand, as shown in FIG. 15, the adhesive tape 2
The method of sticking and fixing the L-shaped protective material 22 to the corner portion 21 of the concrete skeleton 19 using No. 6 is relatively easy and can be performed at low cost, but has the following problems.

That is, the corner portion 2 of the concrete skeleton 19
When the L-shaped protective material 22 is removed after the curing of 1 is completed,
When the adhesive tape 26 is peeled off, there is a problem that the glue of the adhesive tape 26 remains on the surface of the concrete skeleton 19 to cause dark spots. In particular, when the surface of the concrete skeleton 19 is used as it is, the stain is a problem. For this reason, although the work of removing the stains is performed using a thinner or the like, the surface of the concrete skeleton 19 is discolored as if it were clouded by this removing work, and it is necessary to repair it. As described above, there is a problem that a great deal of labor, time, and cost are required for the work of removing / restoring the stain that occurs when the adhesive tape 26 is peeled off. In addition, there is a problem in safety due to the use of thinners that have an adverse effect on the human body, and there is a problem in that sufficient care is required in handling.

The present invention has been made in order to solve the above-mentioned conventional problems, and the work of fixing the L-shaped protective material to the corner portion of the concrete skeleton can be performed easily and efficiently, and moreover, the reliable fixing can be achieved. In addition, it is possible to remove the L-shaped protective material from the corner of the concrete skeleton easily, and at the same time, the corner of the concrete skeleton can be cured with high efficiency without the need to repair the surface of the concrete skeleton. The purpose is to provide a protection device.

[0029]

SUMMARY OF THE INVENTION The present invention is a curing protection for pouring ready-mixed concrete inside a formwork supported by a formwork-fixing rod to protect the corner portion of a concrete frame after deframed. A device, which is an L-shaped protective member formed along a corner portion of a concrete skeleton, a female screw portion that is screwed into a male screw portion of a mold fixing rod protruding into a recess on the surface of the concrete skeleton, and a fastening material The L-shaped protective material is connected to the locking member having a mounting portion and the fastening member mounting portion of the locking member attached to the male screw portion at a position sandwiching the corner portion of the concrete skeleton to connect the L-shaped protective material to the corner portion of the concrete skeleton. The present invention relates to a curing protection device for a corner portion of a concrete skeleton, which is provided with a staking material fixed to the.

In the above means, the engaging member is made of synthetic resin, and in place of the female screw portion provided in the engaging member, the male screw portion is provided with a fitting opening having concave and convex portions capable of being fitted and fixed on the inner surface. May be.

At least a part of the binding material may be provided with an elastic member, the elastic member may be rubber, and the elastic member may be a spring.

According to the present invention, it operates as follows.

The male screw portion protruding into the recess is provided with a locking member that can be easily and surely attached and detached, and the fastening member mounting portion provided in the locking device has an elastic member at least in part. The L-shaped protective material is fixed to the corner portion of the concrete skeleton by hooking and locking the end portion of the securing material. Since it did in this way, the work of fixing the L-shaped protective material can be performed easily and efficiently, and further, the L-shaped protective material can be securely fixed.

Further, the work for removing the L-shaped protective material from the corner portion of the concrete skeleton can be easily performed, and the work can be performed with high efficiency without requiring the work for repairing the surface of the concrete skeleton.

[0035]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 to 4 show an example of a curing / protecting device for a corner portion of a concrete skeleton of the present invention.
In the figure, the same parts as those in FIGS. 11 to 15 are designated by the same reference numerals, and detailed description thereof will be omitted.

The curing protection device for the corner portion of the concrete skeleton of the present invention is provided with the L-shaped protective material 22 arranged at the corner portion 21 of the concrete skeleton 19 as in the conventional case.

Further, as shown in FIGS. 1 and 2, it can be screwed and fixed to the male screw portion 4 of the mold fixing rod protruding to the bottom of the recess 20 formed on the surface of the concrete skeleton 19. The locking device 27 is provided.

The locking member 27, as shown in FIGS. 3 and 4,
A female screw portion 28 that can be screwed into the male screw portion 4 of the mold fixing rod 1 is provided on one end side, and a hook-shaped securing material attaching portion 29 is provided on the other end side. The locking tool 27 and the securing material mounting portion 29 can be made of synthetic resin, metal, or the like.

Further, as shown in FIG. 1, the male screw portion 4 of the recess 20 at the position where the corner portion 21 of the concrete skeleton 19 is sandwiched.
The securing material 30 is configured to connect the securing material mounting portions 29 of the locking tool 27 attached to the.

The binding material 30 shown in FIGS. 1 and 2 is composed entirely of elastic members 31 such as band-shaped rubber, and annular members 32 are formed at both ends of the elastic members 31. The annular portion 32 is attached to the hook-like securing material attachment portion 2 of the locking tool 27.
It is hooked on 9 so that it can be locked.

FIG. 5 shows another form of the fastener in the apparatus for protecting and curing the corner portion of the concrete skeleton of the present invention. The fastener 33 of FIG. 5 is made of a synthetic resin such as hard PVC. The fitting 33 is manufactured, and the fitting 33 has a concavity and convexity 34 on the inner surface that can be fixed to the male screw portion 4 by being pushed into the male screw portion 4 of the mold fixing rod 1 and fitted therein. 35 is formed. Also, the locking device 33
At the end opposite to the fitting port 35, a hook-like securing material attaching portion 29 similar to the above is provided.

The operation of the above embodiment will be described below.

As shown in FIGS. 1 and 2, the male screw portion 4 of the mold-fixing rod 1 projecting into the concave portion 20 at a position sandwiching the corner portion 21 of the concrete skeleton 19 is attached to the male screw portion 4 of FIG.
The lock 27 of FIG. 5 or the lock 33 of FIG. 5 is fixed.

3 and 4, the locking tool 27 is supported by fingers, and the female thread part 28 is brought into contact with the male thread part 4 and rotated to be screwed into the male thread part 4. As a result, the locking tool 27 is firmly fixed to the male screw part 4.

Further, the locking tool 33 of FIG. 5 supports the locking tool 33 with fingers and pushes the fitting port 35 against the male screw portion 4.
At this time, the unevenness 34 of the fitting port 35 is deformed and fitted into the male screw portion 4, whereby the locking member 33 is firmly fixed to the male screw portion 4.

Next, as shown in FIGS. 1 and 2, the L-shaped protective material 22 is arranged along the corner portion 21 of the concrete skeleton 19.

Subsequently, one end of the fastening material 30 made of the elastic member 31 is attached to the fastening material attachment portion 29 of the locking tool 27 (or 33) fixed to the one male screw portion 4 sandwiching the corner portion 21. Of the locking member 27 (or 33) fixed to the other male screw portion 4 to the locking member attachment portion 29 of the locking member 27 (or 33) fixed to the other male screw portion 4. Hook 32 to lock. As a result, the L-shaped protective member 22 is securely fixed to the corner portion 21 of the concrete frame 19 by the elasticity of the fastening member 30 by the elastic member 31.

On the other hand, when removing the L-shaped protective material 22 installed in the corner portion 21 of the concrete skeleton 19 after curing, first, the annular portion 32 of the securing material 30 is locked by the locking tool 27 (or 33). The lashing material 30 is detached from the lashing material attaching portion 29
After removing, the locking tool 27 (or 33) is removed from the male screw part 4. At this time, the locking tool 27 of FIGS. 3 and 4 can be removed from the male screw portion 4 by turning the locking tool 27 with fingers. Further, the locking tool 33 of FIG. 5 can be removed from the male screw portion 4 by pulling the locking tool 33 to the outside with a finger or an instrument such as pliers.

The above-mentioned locking members 27, 33 may be reused, and since the locking members 27, 33 can be mass-produced at a low cost by using a resin material, they may be disposable. At this time, since it is considered that the engaging member 33 cannot be reused because the unevenness 34 is crushed in particular, the engaging member 33 is disposable.

As described above, the male screw portion 4 projecting into the recess 20 is provided with the engaging members 27 and 33 which can be easily and surely attached and detached, and the fastening members 27 and 33 are fixed. The L-shaped protective material 22 is fixed to the corner portion 21 of the concrete skeleton 19 by hooking and locking the end portion of the securing material 30 made of the elastic member 31 to the material mounting portion 29. The work of fixing the material 22 can be performed easily and efficiently. Further, the L-shaped protective material 22 is attached to the corner portion 2.
1 can be securely fixed.

Further, the work for removing the L-shaped protective material 22 from the corner portion 21 of the concrete skeleton 19 can be performed easily and highly efficiently without the need for repairing the surface of the concrete skeleton 19.

6 and 7 show another example of the lashing member 30. FIG. 6 shows the lashing member 3 made of the elastic member 31.
At the end of 0, the securing material attachment part 29 of the locking tools 27, 33 is attached.
With a ring 36 for locking to
FIG. 7 shows a case in which the hook 37 is provided at the end of the same fastening material 30.

When the fastening member 30 is provided with the hook 37 at the end as shown in FIG. 7, as shown in FIG.
The binding material attachment portion 29 provided on the wires 7 and 33 may be a hook portion including a pin 38 for hooking the hook 37 and a flange 39 for preventing the hook 37 from falling off.

9 and 10 show another example of the lashing member 30. FIG. 9 shows a part of a non-stretchable member 41 such as metal having a hook 40 at its end. FIG. 10 shows a case in which the elastic member 31 made of a belt-shaped rubber is provided, and in FIG. 10, the elastic member 45 made of a spring 44 is provided in a part of the non-elastic member 43 such as a string having the ring 42 at the end. It shows the case. Thus, the L-shaped protective material 22 can be surely fixed to the corner portion 21 of the concrete skeleton 19 due to its elasticity even by the securing material 30 partially provided with the elastic members 31 and 45.

The present invention is not limited to the above-mentioned embodiment, but the material and shape of the locking tool, the material and shape of the securing material attachment portion, the configuration of the securing material, etc. are variously changed. It goes without saying that various changes can be made without departing from the scope of the present invention.

[0057]

According to the present invention, the male screw portion protruding into the concave portion is provided with the engaging member that can be easily and surely attached and detached, and the securing member attaching portion provided in the engaging member is Since the L-shaped protective material is fixed to the corner of the concrete skeleton by hooking and locking the end of the lashing material that has at least a part of the elastic member, it is easy to fix the L-shaped protective material. Moreover, there is an effect that it can be performed with high efficiency, and that the L-shaped protective material can be reliably fixed.

Further, there is an effect that the work for removing the L-shaped protective material from the corner portion of the concrete skeleton can be easily performed and the work can be performed with high efficiency without requiring the work for repairing the surface of the concrete skeleton.

[Brief description of drawings]

FIG. 1 is a perspective view showing an example of the form of a protective device for a corner portion of a concrete skeleton of the present invention.

FIG. 2 is a cross-sectional view of FIG. 1 viewed from the II direction.

FIG. 3 is a partially cutaway side view of a locking tool.

FIG. 4 is a view taken along the line IV-IV in FIG.

FIG. 5 is a partially cutaway side view showing another form of the locking tool in the curing protection device for the corner portion of the concrete skeleton of the present invention.

FIG. 6 is a side view showing another example of the fastening material.

FIG. 7 is a side view showing another example of the binding material.

FIG. 8 is a side view showing still another example of the locking tool.

FIG. 9 is a side view showing still another example of the binding material.

FIG. 10 is a side view showing still another example of the fastening material.

FIG. 11 is a partially cut side view showing a state where the mold is assembled by the mold fixing rod and the mold fixing tool.

FIG. 12 is a cross-sectional view showing details of a mold fixing tool.

FIG. 13 is a perspective view showing an example of a method for fixing an L-shaped protective material to a corner portion of a conventional concrete skeleton.

14 is a cross-sectional view of FIG. 13 viewed from the XIV direction.

FIG. 15 is a perspective view showing another example of a method for fixing an L-shaped protective material to a corner portion of a conventional concrete skeleton.

[Explanation of symbols]

1 Formwork fixing rod 4 Male screw part 19 concrete skeleton 20 recess 21 Corner 22 L type protective material 27 Locking tool 28 Female thread 29 Secured material attachment part 30 lashing material 31 Elastic member 33 Locking tool 34 unevenness 35 Mating port 44 spring 45 Telescopic member

Claims (5)

(57) [Claims] 1. A curing protection device for pouring ready-mixed concrete inside a formwork supported by a formwork-fixing rod to protect the corner portion of the concrete body after deframed, which comprises: L formed along the corner
A shape protection material, a locking tool having a female threaded portion that engages with the male threaded portion of the formwork fixing rod projecting into a recess on the surface of the concrete structure, and a securing material mounting portion, and a position where the corner of the concrete structure is sandwiched. Of the concrete skeleton, which comprises: a lashing material for connecting the lashing material attachment portions of the locking tool attached to the male screw portion of the locking fixture to fix the L-shaped protective material to the corner portion of the concrete skeleton. Curing protection device for corners. 2. The engaging member is made of synthetic resin, and is provided with a fitting port having an inner surface having concavities and convexities capable of being fitted and fixed to a male screw part, instead of the female screw part provided in the engaging tool. The curing protection device for the corner portion of the concrete skeleton according to claim 1. 3. The curing protection device for a corner portion of a concrete skeleton according to claim 1 or 2, wherein the binding material is provided with an elastic member at least at a part thereof. 4. The apparatus for curing and protecting a corner portion of a concrete skeleton according to claim 3, wherein the elastic member is rubber. 5. The apparatus for protecting and curing a corner portion of a concrete skeleton according to claim 3, wherein the elastic member is a spring.