JP3455806B2 - Anchor pin for wall repair and method of wall repair - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an anchor pin for wall repair and a wall repair method.

[0002]

2. Description of the Related Art An anchor pinning method is one of the repairing methods when a wall surface of a structure such as a tile outer wall of a building is deteriorated and floating occurs. In this construction method, as shown in FIG. 7, an insertion hole b is formed at a repair target location on the outer wall a of the structure.
And the injection material d is inserted through the injection pipe c inserted therein.
8 is filled, the anchor pin e is inserted into the insertion hole b and the extra length portion is cut as shown in FIG.

[0003]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention
There are the following problems. <A> Since the seal structure is incomplete, pressure cannot be applied when the injection material d is filled in the insertion hole b. Therefore, the injection material d does not sufficiently penetrate into the repaired portion such as the floating gap, and reliable repair work cannot be expected.

<B> Since the seal structure is incomplete, the injecting material d injected into the insertion hole b leaks and adheres to the surface of the outer wall a, so that the wiping operation is troublesome.

<C> After the injection of the injection material d, the anchor pin e
Since the injection material d further leaks out when the insert is inserted, the wiping work is troublesome.

<D> Waiting for the injection material d to harden, the anchor
Since it is necessary to cut the pin e, the work is delayed and complicated.

[0007]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an anchor for wall repair, which enables reliable repair work and simplifies the work. The purpose is to provide a pin and wall repair method.

[0008]

That is, according to the present invention, there is provided a valve seat groove circumferentially recessed in a peripheral surface of a shaft portion of an anchor pin, and a tail end surface of the shaft portion from the peripheral surface of the valve seat groove. An anchor pin for wall repair, characterized in that it has an injection passage penetrating up to and a resilient ring valve fitted into the valve seat groove to open and close the opening on the valve seat groove side of the injection passage. Is. Further, in the above anchor pin, a taper portion on the tail end side of the shaft portion of the anchor pin, which gradually expands in diameter toward the tail end surface side,
An anchor pin for repairing a wall surface, characterized in that it has an elastic seal ring attached to a boundary portion between the taper portion and the shaft portion. Further, in the wall surface repair method using the anchor pin, after the hole is bored in the wall surface of the structure to be repaired to insert the anchor pin, the tail end side opening of the injection path of the inserted anchor pin is formed. A method for repairing a wall surface is characterized in that the injection material is press-fitted from a portion, and the injection material is press-fitted from a valve seat groove side opening of the injection path to a repaired portion.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. <A> Structure of Anchor Pin As shown in FIGS. 1 and 2, the anchor pin 100 is a rod body made of stainless steel or the like having an appropriate total length according to the repair depth of the repair target portion. At both ends of the shaft 101 of the rod,
102 and a tail end 103 are formed, and the tip of the tip 102 is
It has a taper portion 104 formed in consideration of ease of insertion. The tip portion 102 does not have to have a larger diameter than the shaft portion 101, and may have the same diameter or a small diameter.

On the other hand, at the tail end portion 103, a taper portion 10 formed by gradually expanding its diameter from the shaft portion 101 toward the tail end face side.
Has 5. Further, the tail end surface of the tail end portion 103 has a nozzle mounting hole 106 for mounting a nozzle of a press-fitting device for injecting material.

A nozzle mounting hole 106 is provided at the axial center of the shaft 101.
An injecting material injection path 107 communicating with is established. The tip side of the injection path 107 is closed.

As shown in FIGS. 2 and 3, a valve seat groove 108 is circumferentially recessed in the circumferential surface of the shaft portion 101. On the peripheral surface of the valve seat groove 108, both ends of an injection path 109 which communicates orthogonally to the injection path 107 are opened. And the valve seat groove 10
A ring valve 110 having elasticity, such as rubber, for opening and closing the openings at both ends of the injection path 109 is attached to the valve 8.

On the other hand, the boundary portion between the taper portion 105 of the tail end portion 103 and the shaft portion 101 also has an elastic sheath made of rubber or the like.
Attach the ruling 111. The seal ring 111 and the ring valve 110 have an inner diameter smaller than the outer peripheral diameters of the shaft portion 101 and the valve seat groove 108, and are in a state in which tension is always applied.

The above is one embodiment of the anchor pin of the present invention, and there is also an embodiment in which the tip portion 102 and the taper portion 104 are not formed, and the tail end portion 103 and the taper portion are also provided. 105
There is also an embodiment in which the seal ring 111 is not attached and the seal ring 111 is not formed.

<B> Wall Surface Repairing Method Next, a wall surface repairing method using the anchor pin constructed as described above will be explained. As shown in FIG. 4, first, a device such as the vibration drill 2 is used to form the insertion hole 3 in the wall surface of the structure to be repaired.

Next, the anchor pin 100 is inserted into the insertion hole 3
Press in. At this time, a driving device such as the air cylinder 4 may be used.

After the driving of the anchor pin 100 is completed, the nozzle of the injection device such as the static mixer 5 is mounted in the nozzle mounting hole 106 of the tail end 103 of the anchor pin 100. Then, using the anchor pin 100 as an injection pipe, the injection material 6 such as epoxy resin is press-fitted into a repaired portion such as a clearance due to floating, and the construction is completed.

[0018]

When the injection material 6 is press-fitted, the injection material 6 press-fitted into the injection path 107 of the anchor pin 100 is next injected into the injection path 109.
As shown in the upper half of FIG. 5, the pressure input spreads the ring valve 110 to cause it to flow out, and due to the applied pressure, it reliably fills and permeates the repaired portion such as a clearance due to floating. .

After the injection material 6 is press-fitted, as shown in the lower half of FIG. 5, the ring valve 110 is surely injected by the restoring force of the ring valve 110 and the pressure of the surrounding injection material 6.
Since the opening 9 is closed, the press-fitted injection material 6 does not flow back into the anchor pin 100.

Also, as shown in FIG. 6, the anchor pin 10
When inserting 0, seal ring 111 attached to the tail end side
Moves gradually toward the tail end surface side due to the frictional resistance with the inner surface of the insertion hole 3, so that the seal ring 111 is moved to the taper portion 10.
It is expanded by 5, and is crushed between the inner surface of the insertion hole 3 and the taper portion 105 to be packed. Therefore, the seal ring 111 is not only pressed by the pushing force acting as described above but also by the pressure force of the injecting material 6.
The opening of the insertion hole 3 can be reliably sealed. Therefore, the injection material 6 does not leak and the injection material 6 can be filled under pressure.

[0021]

Since the present invention is as described above, the following effects can be obtained. <A> The action of the seal ring and the taper portion increases the reliability of the seal structure, so that pressure can be applied when the injection material is filled in the insertion hole. Therefore, it is possible to sufficiently infiltrate the injection material into the repaired portion such as the floating gap, and the repair work can be reliably performed.

<B> Since the certainty of the seal structure is increased, the injection material injected into the insertion hole does not leak to the surface of the outer wall, and the labor of the wiping operation can be omitted. Further, even if the press-fitting nozzle is removed immediately after the injection, the injection material does not flow back, so that the injection work time can be shortened.

<C> Since the anchor pin also serves as the injection pipe, it is not necessary to insert the anchor pin after the injection of the injection material as in the conventional case. Therefore, since the injection material does not leak due to the insertion of the anchor pin, it is possible to save the labor of the wiping operation. Further, it is not necessary to wait for the injection material to harden and perform the anchor pin cutting work as in the conventional case, so that the work can be speeded up and simplified.

<D> Since the anchor pin has a simple structure, the manufacturing cost is low.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment of an anchor pin of the present invention.

FIG. 2 is a side view of an embodiment of the anchor pin of the present invention.

FIG. 3 is an enlarged perspective view of a valve portion of an embodiment of an anchor pin of the present invention.

FIG. 4 is an explanatory view of a wall repair method of the present invention.

FIG. 5 is an explanatory view of the function of the valve portion of the anchor pin.

FIG. 6 is an explanatory view of the function of the seal portion of the anchor pin.

FIG. 7 is an explanatory diagram of a conventional technique.

FIG. 8 is an explanatory diagram of a conventional technique.

Claims (3)

(57) [Claims] 1. A valve seat groove which is circumferentially recessed on a peripheral surface of a shaft portion of an anchor pin, an injection passage which penetrates from a peripheral surface of the valve seat groove to a tail end surface of the shaft portion, and the valve seat. An anchor pin for wall surface repair, comprising: an elastic ring valve fitted into the groove to open and close the opening on the valve seat groove side of the injection path. 2. The anchor pin for wall surface repair according to claim 1, wherein a taper portion gradually increasing in diameter toward the tail end surface side is provided on the tail end side of the shaft portion of the anchor pin. An anchor pin for repairing a wall surface, which has an elastic seal ring attached to a boundary portion between the taper portion and the shaft portion. 3. A wall surface repair method using the anchor pin for wall surface repair according to claim 1 or 2, wherein a hole is made in the wall surface of the structure to be repaired and the anchor pin is inserted, and then the insertion is performed. A method for repairing a wall surface, characterized in that the injection material is press-fitted from the tail end side opening of the injection path of the anchor pin, and the injection material is press-fitted into the repaired part from the valve seat groove side opening of the injection path.