JPH05311992A - Hole blocking device - Google Patents

Abstract

PURPOSE:To make it possible to cut off water leakage with excellent work efficiency in a state to block a through-hole with one touch by pushing an enclosed collar loaded to the front end side of a nipple through a moving collar to expand it in the direction of an outer diameter. CONSTITUTION:When there is water leakage in a concrete construction C, etc., a through-hole H is bored, and a portion of an enclosed collar 16 of a hole blocking device is inserted into the through-hole H. After that, a lever section 32 of a pushing handle 28 of a pushing means 22 is rotated by approximate 180 deg. clockwise, an eccentric pushing section 30 is rotated by an eccentric shaft 34, and a moving collar 36 is driven forward. Then, the enclosed collar 16 is compressed by the advancement of the moving collar 36 and is expanded in the direction of an outer diameter, it is contacted with the through-hole H in a state of enclosure, and the injection of ground water on the rear side of the concrete construction C can be prevented. Under such a state, a plug of a valve 42 is opened to inject an injection agent, and it is filled into a gap on the rear side of the concrete construction C to cut off water leakage.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for closing a through hole with one touch, and more particularly, it is used for stopping water leakage in a concrete structure in contact with soil such as a tunnel, a sewer pipe or an underground structure. The present invention relates to a hole closing device.

[0002]

2. Description of the Related Art For example, in a concrete structure such as a tunnel, from a so-called junk part, which is a honeycomb-shaped void due to poor compaction performed to eliminate a gap when pouring concrete and to make the concrete dense, Groundwater leaks often occur.

As a method of stopping such leakage of water, conventionally, cement mortar or a resin material is injected into the back surface void portion of the concrete structure using a high pressure injection valve to fill the back surface of the junker portion. Water leakage was stopped by filling the voids on the back of the junker part with an expansive material, or by applying quick-setting cement to the surface of the junker part.

When the injection material is injected using the high-pressure injection valve, a hole is made in the vicinity of the junker portion of the concrete structure, the high-pressure injection valve is inserted into the hole, and the back surface of the concrete structure is inserted. By pouring the injection material into the side, the injection material is filled into the voids formed on the back surface side of the concrete structure.

[0005]

However, a gap is created between the hole of the concrete structure and the high-pressure injection valve inserted in the hole, and the gap is left from the gap even while the injection material is being injected. There was a problem that groundwater spouted to the surface side and the water stoppage work could not be completed.

[0006] The present invention has been made in view of the above problems, and can improve the work by making the gap between the high-pressure injection valve and the through hole of the concrete structure close with one touch. It is an object of the present invention to provide a hole closing device.

[0007]

In order to solve the above problems, the present invention provides a nipple, a sealing collar made of an elastic body fitted to the outer surface of the nipple, and a sealing collar attached to the tip of the nipple. Means for preventing movement toward the tip side of the nipple, and a moving collar that is located at the base end side of the sealing collar and is loosely inserted so as to be movable with respect to the nipple,
A hole closing device is provided which is attached to the base end side of the nipple and comprises a pressing means for pressing the moving collar toward the tip side of the nipple.

A fixing collar for fixing the pressing means to the nipple, a flat pressing portion rotatably attached to the fixing collar by an eccentric shaft, and a lever for rotating the pressing portion. By configuring the moving collar to move forward by the pressing portion by the rotation of the handle, the sealing collar can be compressed and expanded in the outer diameter direction with one touch, and the through hole is sealed with the sealing collar. It can be in a state. In this case, if at least one flat portion is formed on the outer peripheral edge of the flat plate-shaped pressing portion, when the pressing handle is rotated to advance the moving collar, the moving collar is stably maintained at a predetermined position. It is preferable because it can be obtained.

As the sealing collar made of the elastic body,
A rubber material is used.

Further, by providing an adjusting nut located at the base end side of the pressing means and capable of adjusting and fixing the position of the pressing means in the axial direction of the nipple, the pressing means is finely adjusted. It is preferable because it can be obtained.

Further, if a V-shaped groove is formed on the outer peripheral surface of the nipple located on the base end side of the sealing collar, for example, a hole closing device is inserted into a through hole in a concrete structure to form a concrete structure. After filling the gap on the back side of the object with the injection material, it is preferable that the hole closing device is struck to break the nipple from the V-shaped groove to simplify the drawing operation.

It is preferable to separately prepare a cylindrical auxiliary collar having a thickness smaller than that of the closed collar because it can correspond to the inner diameter of the through hole.

When the hole closing device is used as a high-pressure injection valve for stopping leakage of groundwater in a concrete structure, a water-stopping material such as slag cement or a waterproofing material is used as the injection material. ..

The hole closing device of the present invention is not limited to the one used as the above-mentioned high pressure injection valve,
For example, it can also be used for a water tank or the like, and the point is, of course, that it can be used for any thing as long as the through hole can be sealed.

[0015]

For example, when water leakage from the concrete structure (C) is stopped, a through hole (H) is opened as shown in FIG. 4, and the through hole (H) is provided with a sealing collar of the hole closing device (10). (16) Insert up to about part.

After the insertion, when the lever portion (32) of the pushing handle (28) of the pushing means (22) is rotated clockwise by 180 degrees, the pushing portion (30) is eccentric by the eccentric shaft (34). The rotation of the pressing portion (30) causes the moving collar (36) to move forward, and the moving collar (36) to move forward causes the sealing collar (16) to be compressed and bulged in the outer diameter direction to seal the through hole (H). To contact. Therefore, even if the hole closing device (10) is inserted into the through hole (H), the groundwater on the back surface side of the concrete structure (C) does not spout to the front surface side.

In this state, open the stopper of the valve (42),
The injection material is injected, and the injection material is filled in the voids formed on the back surface side of the concrete structure (C).

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail based on an embodiment shown in the accompanying drawings. 1 and 2 show a plan view and a sectional view of a hole closing device (10) according to the present invention,
As an example, a high pressure injection valve is shown.

In the figure, reference numeral (12) is a cylindrical nipple, and a male screw (1
4) is formed. (16) is a cylindrical closed collar made of an elastic material such as natural rubber or synthetic rubber, and is fitted and attached to the nipple (12). The sealing collar (16) can be removed by removing the fixing nut (18) and the washer (20) from the nipple (12). 12) can be exchanged.

A pressing means (22) is attached to the base end side of the nipple (12). The pressing means (22)
Is a fixed collar (26) fitted into the nipple (12) and fixed by a set screw (24) so as not to rotate in the longitudinal axis direction of the nipple (12) and the fixed collar (2).
The pressing handle (2) rotatably attached to the upper surface of (6)
8) and.

In the illustrated example, the pressing handle (28) is a disk-shaped pressing portion (30) rotatably attached to the fixed collar (26) by an eccentric shaft (34), and the pressing portion (30). ) And a lever part (32) for rotating. The pressing portion (30) need not have a disc shape as shown in the figure, and may have a cam shape or an elliptical shape.

Reference numeral (36) is a moving collar interposed between the sealing collar (16) and the pressing means (22). The moving collar (36) has a tubular shape, and is loosely attached so as to be movable in the axial direction of the nipple (12). Therefore, the moving collar (36) is moved to the sealing collar (16) side by the pressing portion (30) by rotating the lever portion (32) of the pressing handle (28) in the clockwise direction in FIG. In this case, if at least one flat portion (30a) is formed on the outer peripheral edge of the flat plate-shaped pressing portion (30), the pressing handle (2
When the moving collar (36) is rotated and the moving collar (36) is moved forward, the moving collar (36) can be stably maintained at a predetermined position, which is preferable.

Reference numeral (38) is an adjusting nut for finely adjusting the position of the pressing means (22). Ie set screws (24)
The fixing collar (26) by loosening the nipple (1
After the axial positioning of 2), the adjusting nut (38)
To fix the fixed collar (26) in a fixed position, and then to tighten the set screw (24) to fix the fixed collar (26) to the nipple (12) non-rotatably.

As shown in FIG. 2, a V-shaped groove (4) is formed on the nipple (12) at the base end side of the sealing collar (16).
0) is formed to make it easy to break, after pouring an injection material such as a waterproof material and a water blocking material through the hole (H) of the concrete structure (C), the hole is closed from the hole (H). This is preferable because it is not necessary to remove the device (10) and the work is simple.

Reference numeral (42) is a valve attached to the base end side of the nipple (12), and reference numeral (44) is an opening / closing lever.

Reference numeral (46) is an auxiliary color, which is shown in FIG. The auxiliary collar (46) is a sealing collar (1
It is made of the same material as 6) and has a thin tubular shape. By inserting the auxiliary collar (46) into the sealing collar (16), the meat pressure of the sealing collar (16) can be substantially changed, and the inner diameter of the hole (H) of the concrete structure (C) can be changed. It corresponds to the size of.

Next, a method of using the hole closing device (10) shown in FIGS. 1 and 2 will be described. For example, in the case of stopping water leakage from the concrete structure (C), it is shown in FIG. Thus, the through hole (H) is opened, and the through hole (H) is inserted up to the position of the sealing collar (16) of the hole closing device (10).

After the insertion, when the lever portion (32) of the pressing handle (28) of the pressing means (22) is rotated clockwise by 180 degrees, the pressing portion (30) is eccentric by the eccentric shaft (34). The rotation of the pressing portion (30) causes the moving collar (36) to move forward, and the moving collar (36) to move forward causes the sealing collar (16) to be compressed and bulged in the outer diameter direction to seal the through hole (H). To contact. Therefore, even if the hole closing device (10) is inserted into the through hole (H), the groundwater on the back surface side of the concrete structure (C) does not spout to the front surface side.

In this state, open the stopper of the valve (42),
The injection material is injected, and the injection material is filled in the voids formed on the back surface side of the concrete structure (C).

After the filling of the injection material is completed, the hole closing device (1
0) can be pulled out from the through hole (H), but if the injection material has hardened and it is difficult to pull out, the moving collar (36)
By hitting the area, the V-shaped groove (4
The workability can be simplified by folding from 0).

[0031]

As described above, according to the present invention, a sealing collar made of an elastic material is attached to the tip side of the nipple,
Since the sealing collar is expanded in the outer diameter direction by pressing the sealing collar by the pressing means via the moving collar, for example, a through hole of a concrete structure or the like and a hole closing device inserted into the through hole. There is an effect that it is possible to make the gap between and close with one touch, and to improve workability.

[Brief description of drawings]

FIG. 1 is a plan view of a hole closing device according to the present invention.

FIG. 2 is a cross-sectional view of the hole closing device with the valve removed in FIG.

FIG. 3 is a sectional view showing an auxiliary collar.

FIG. 4 is a diagram showing an example of a usage state of the hole closing device according to the present invention.

[Explanation of symbols]

 10 Hole Closing Device 12 Nipple 16 Sealing Collar 18 Fixing Nut 22 Pressing Means 26 Fixing Collar 28 Pushing Handle 30 Pushing Part 32 Lever 34 Eccentric Shaft 36 Moving Collar 38 Adjusting Nut 40 V-shaped Groove 44 Auxiliary Collar

Claims (6)

[Claims] 1. A nipple, a sealing collar made of an elastic body fitted to the outer surface of the nipple, a means attached to the tip of the nipple to prevent the sealing collar from moving toward the tip side of the nipple, and the sealing. From a moving collar located on the base end side of the collar and loosely inserted so as to be movable with respect to the nipple, and a pressing means attached to the base end side of the nipple and pressing the moving collar toward the tip side of the nipple. A hole closing device. 2. The pressing means includes a fixing collar fixedly attached to the nipple, a flat plate-like pressing portion rotatably attached to the fixing collar by an eccentric shaft, and the pressing portion. The hole closing device according to claim 1, further comprising a handle having a lever for allowing the moving collar to move forward by a pressing portion when the handle rotates. 3. The hole closing device according to claim 1, wherein the sealing collar is made of a rubber material. 4. An adjusting nut, which is located on the base end side of the pressing means and is capable of adjusting and fixing the position of the pressing means in the axial direction of the nipple, is provided. The hole closing device according to any one of claims. 5. The hole closing device according to claim 1, wherein a V-shaped groove is formed on an outer peripheral surface of the nipple located on the base end side of the sealing collar. 6. The cylindrical auxiliary collar, which is made of the same material as the sealing collar and is fitted and mounted on an outer peripheral surface of the sealing collar, is provided. Hole closing device.