JPH07285122A - Method of boring concrete structure matter - Google Patents

Abstract

PURPOSE:To provide a method of boring a concrete structural matter which can shorten a boring operating time and moreover, even if a through hole is bored through a wall, cooling water does not flow out to the opposite side of the wall by passing through the through hole. CONSTITUTION:After a core drill device 2 is equipped with a diamond core bit 5, a recessed part is formed in a bored hole face 3a by forming a plurality of holes where nonpenetration continues while allowing a moving device 6 to water-cool its diamond core bit 5 while moving the diamond core bit 5 in the direction running along the bored hole face by the moving device 6 and then a hole penetrating through a concrete structural matter without allowing the moving device 6 to water-cool the diamond core bit 5 is formed within the recessed part.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for perforating a concrete structural object suitable for perforating a concrete structural object using a diamond core bit.

[0002]

2. Description of the Related Art Conventionally, as a perforating device used for perforating a concrete structure, there is known one having a structure in which a diamond core drill is held on a floor surface made of concrete or the like by utilizing a vacuum suction force, This is shown in FIG.

A suction fixing device 101 is arranged on a floor surface 100 made of concrete or the like to be perforated, and the suction fixing device 101 is moved to the floor surface 1 through a vacuuming process using a vacuum pump (not shown).
00 by vacuum suction and fixing, and the suction fixing device 101
Establish a rod-shaped guide body 102 whose lower end is supported and fixed to
The guide member 102 is provided with a sliding member 105 that is movable in the axial direction, and the sliding member 105 includes the handle 106.
It is configured so that it can be slid along the axial direction of the guide body 102 and held in an appropriate supporting position by the operation of. This sliding member 105
A diamond core drill 103 is integrally supported on the side of, and a diamond core bit 103b extending toward the floor surface 100 is attached to a spindle 103a of the diamond core drill 103. Floor surface 1 of the extension of the tip of the diamond core bit 103b
00 is an annular water receiver 1 that surrounds the perforated portion 100a.
04 is arranged, and this water receiving body 104 and the floor surface 10
The space between 0 is made watertight using putty, and the hose receiving portion 10
The cooling water supplied to the tip of the diamond core bit 103b via the water is temporarily stored in the water receiver 104, and then collected through a hose (not shown).

[0004]

In the conventional perforation apparatus described above, the suction fixing apparatus 101 is vacuum-sucked and fixed to the floor surface 100, and then the diamond core drill 103 is operated to cause the diamond core bit 103b to move the diamond core bit 103b. While cooling the water with the floor 1
The diamond core bit 103b only moves up and down along the guide body 102 because it is a hole drilling work to 00, and in this state, it is determined by the diamond core bit 103b on the floor surface 100 located directly below the diamond core bit 103b. When only one hole having a size can be formed and a plurality of holes formed by the diamond core bits 103b are partially overlapped on the floor surface 100 to form a long-hole-shaped concave portion as a whole, a drilling operation is performed. Is extremely troublesome and takes a long time.

That is, the vacuum state between the suction fixing device 101 and the floor 100 is released, and the suction fixing device 101 is moved to the floor surface 1.
It is necessary to repeatedly perform a series of operations of shifting from 00 to a horizontal method, and then again vacuuming between the suction fixing device 101 and the floor surface 100 to fix the suction fixing device 101 to the floor surface 100 by suction. However, the drilling work for forming a plurality of holes in close proximity is extremely troublesome and takes a long time.

In addition, when a recess for mounting a push-button box for wheelchairs is formed on a perforated surface of a wall in an elevator hall, a through hole penetrating the wall for electrical wiring to the push-button box for wheelchairs. Therefore, there is a problem that water for cooling the diamond core bit passes through the wall from the through hole and flows out into the tower.

In view of the above problems, an object of the present invention is to
A concrete structure that can reduce the drilling time, and that even if a through hole is drilled in the wall, the water that cools the diamond core drill does not flow through the through hole to the opposite side of the wall that forms the recess. A method of punching an object is provided.

[0008]

The above object is to provide a core drill device, a suction fixing device fixed to a surface to be drilled of a concrete structure object by vacuum suction, and a core bit of the core drill device which is attached to the suction fixing device. The tip is movable in the direction toward the surface to be drilled, and
In a drilling method for a concrete structural object, wherein a core bit of the core drilling device is provided with a moving device that is movable in a direction along the surface to be drilled, and a plurality of continuous holes are formed in the surface to be drilled. After mounting the diamond core bit on the core drill device, while moving the diamond core bit by the moving device in the direction along the surface to be drilled, the diamond core bit is water-cooled to the surface to be drilled while not cooling the diamond core bit. Forming a recess in the surface to be perforated by forming a plurality of continuous holes, then, the hole through the concrete structure body without water cooling the diamond core bit by the diamond core bit, was formed in the recess This will be achieved.

[0009]

With the suction fixing device fixed on the surface to be drilled by vacuum suction, the diamond drill bit is moved while moving the core drill device in the direction toward the surface to be drilled and in the direction along the surface to be drilled while water cooling the diamond core bit. When rotated, a long hole-shaped recess is formed on the surface to be drilled. in this case,
Since it is not necessary to move the suction fixing device, the drilling work time is shortened.

To form a through hole penetrating the wall in the elongated recess, the diamond core bit is rotated without water cooling to form the through hole in the recess. In this case, since water that cools the diamond core bit is not used, the problem that the cooling water flows through the through hole to the side opposite to the wall where the recess is formed does not occur, and it is used when forming the recess. Since the diamond core bit is used as a core bit for forming a through hole as it is, the through hole forming operation can be completed in a short time.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

In FIG. 1, the punching device 1 of this embodiment is
The core drill device 2, the suction fixing device 4 fixed to the drilled surface 3a of the concrete structure object 3 by vacuum suction, and the diamond core bit 5 tip of the core drill device 2 attached to the suction fixing device 4 and the tip of the drilled surface 3a.
In the direction P toward the direction P, and the diamond core bit 5 of the core drill device 2 extends in the direction Q along the surface to be drilled.
And a moving device 6 that enables the moving.

A water receiver 7 made of steel is integrally provided in the adsorption fixing device 4. Cooling water is sent from the water supply tank 8 to the tip of the diamond core bit 5 of the core drill device 2 through the water supply hose 9. Increase / decrease or stop the supply of cooling water to the tip of the diamond core bit 5
It is performed by opening and closing the valve 10. The cooling water of the diamond core bit 5 that has flowed into the water receiver 7 is supplied to the water absorbing cleaner device 12 via the drain hose 11.

As shown in FIGS. 2 and 3, the suction fixing device 4 has an elliptical fixed base 13 and this fixed base 13.
And an elliptical airtight packing 14 provided on the lower surface and a connecting portion 15 for connecting a vacuum hose (not shown) of a vacuum pump. The fixed base 13 of the suction fixing device 4 has two mounting legs 16 and 16a integrally protruding from the water receiving body 7.
It is fastened with screws.

The water receiver 7 has a water absorbing cleaner device 12
A drainage pipe 17 for connecting the drainage hose 11 connected to is provided.

The moving device 6 includes a sliding body 18 that slides above the adsorption fixing device 4 and the water receiving body 7, a mounting table 20 that is fastened and fixed to the sliding body 18 with screws 19, and the mounting table 20. The attached column 21, the movable member 22 slidably provided on the column 21, and integrally provided with the core drill device 2, and the handle for sliding the movable member 22 along the column 21. And 23.

The water receiver 7 has a diamond core bit 5
A rectangular through hole 7a for passing through is provided. On both sides of the water receiving body 7, fitting portions 18a and 18b formed at both ends of the sliding body 18 are slidably fitted,
Guide pieces 24, 24a are formed. A watertight packing 25 is provided on the lower surface of the water receiver 7.

The core drill device 2 has a structure in which, instead of the diamond core bit 5, a core bit 26 that does not need to be water-cooled, for example, a hole saw, can be attached during a drilling operation.

Next, the punching method of this embodiment will be described using the punching device 1.

First, when the suction fixing device 4 is vacuum-adsorbed on the perforated surface 3a of the concrete structure body 3, the watertight packing 25 of the water receiving body 7 is strongly pressed against the perforated surface 3a and the water receiving body 7 and Watertightness between the perforated surface 3a is maintained. In this state, the suction position of the suction-fixing device 4 on the perforated surface 3a is determined so that the portion desired to be perforated on the perforated surface 3a is located in the through hole 7a of the water receiver 7.

On the other hand, the support 21 to which the core drill device 2 is attached is fixed to the sliding body 18 by the mounting table 20, and the sliding body 18 is mounted on the adsorption fixing layer 4.

As described above, the core drill device 2 installed on the concrete structural object 3 descends on the support column 21 when the handle 23 is rotated clockwise, and the handle 23 is rotated.
When it is rotated counterclockwise, it rises on the column 21. Therefore,
When the handle 10 is rotated clockwise while rotating the diamond core bit 5 while cooling the diamond core bit 5 with the cooling water by opening the valve 10, the diamond core bit 5 causes the diamond core bit 5 to be drilled on the surface 3a to be drilled of the concrete structure object 3. One hole having a size equal to the diameter of 5 is formed. When it is desired to form a continuous hole in this hole, the handle 23 is rotated counterclockwise so that the diamond core bit 5 is located above the surface to be drilled 3a, and the sliding body 18 is moved along the surface to be drilled 3a. After moving the diamond core bit by a size within the diameter of 5, the diamond core bit 5 is cooled with cooling water and the handle 23 is rotated clockwise while rotating the diamond core bit 5. Continuous holes are formed on the surface 3a to be drilled. When forming the hole, if the handle 23 is rotated right and the core drill device 2 is lowered to such an extent that the concrete structure 3 is not penetrated, the surface to be drilled 3a has a long length as shown in FIG. A recess 3b is formed in which no hole-shaped through hole is formed. Since the cooling water supplied to the diamond core bit 5 at the time of forming the long hole-shaped recess 3b is always absorbed by the water absorption type cleaner device 12,
After forming the long hole-shaped recess 3b and closing the valve 10 for a predetermined time, it does not remain in the long hole-shaped recess 3b.

Next, in order to form a through hole for forming wiring or piping in the long hole-shaped recess 3b, the diamond core bit 5 is moved while the handle 22 is rotated clockwise while the valve 10 is closed. When rotated, as shown in FIG.
A through hole 3c is formed in the long hole-shaped recess 3b. In this case, since cooling water is not supplied to the diamond core bit 5, the back surface 3 of the concrete structure object 3 is passed through the through hole 3c.
The cooling water does not flow out to the d side. At this time, since the diamond core bit 5 is not cooled by cooling water, the tip of the diamond core bit 5 may be worn, but the wall thickness of the concrete structure object for allowing the diamond core bit 5 to penetrate is reduced. Is extremely small.

FIG. 6 shows a concrete example in which the perforated surface 3a of the concrete structure body 3 is perforated by the perforation method of this embodiment. In the case of this example, using the diamond core bit 5, while supplying cooling water to the diamond core bit 5, three non-penetrating holes X ₁ , X ₂ and X ₃ are opened to form the recess 3
After forming b, the diamond core bit 5 forms the through hole 3c in the recess 3b in a state where the cooling water is not supplied to the diamond core bit 5.

According to the drilling method of the present embodiment, even if the diamond core bit 5 is used to form the through hole 3c in the wall of the elevator hall, the cooling water that cools the diamond core bit 5 is removed from the tower. Since it can be prevented from entering inside, it is particularly suitable for forming a mounting hole for a push-button box for wheelchairs on a wall of an elevator hall.

[0026]

According to the present invention, a through hole is formed in a concrete structure body, and the cooling water for cooling the diamond core bit is not discharged to the back side of the concrete structure body through the through hole, and in a short time. A method of drilling a concrete structure body capable of drilling is obtained.

[Brief description of drawings]

FIG. 1 is an explanatory view of a punching device showing an embodiment of the present invention.

FIG. 2 is a vertical sectional view of essential parts showing an embodiment of the present invention.

FIG. 3 is a rear view of essential parts showing an embodiment of the present invention.

FIG. 4 is an operation explanatory view of forming a recess on a surface to be punched showing an embodiment of the present invention.

FIG. 5 is an operation explanatory diagram of forming a through hole in a concave portion formed on a surface to be punched according to an embodiment of the present invention.

FIG. 6 is an explanatory diagram of a punching process showing an embodiment of the present invention.

FIG. 7 is an explanatory diagram of a punching device showing a conventional example.

[Explanation of symbols]

 1 Drilling Device 2 Core Drilling Device 3 Concrete Structure Object 3a Drilled Surface 3b Recess 3c Through Hole 4 Adsorption Fixing Device 5 Diamond Core Bit 6 Moving Device 7 Water Receptor 26 Core Bit

Claims (1)

[Claims] 1. A core drill device, a suction fixing device fixed to a surface to be drilled of a concrete structural object by vacuum suction, and a core bit tip of the core drill device directed to the surface to be drilled, which is attached to the suction fixing device. Forming a plurality of continuous holes on the surface to be drilled by using a drilling device provided with a moving device that allows the core bit of the core drill device to move in a direction along the surface to be drilled. In the method of drilling a concrete structure object, after mounting a diamond core bit to the core drill device, while moving the diamond core bit by the moving device in the direction along the surface to be drilled,
By the diamond core bit, while water-cooling the diamond core bit, the surface to be perforated, to form a recess in the surface to be perforated by forming a plurality of non-penetrating continuous holes, then the diamond core bit by the diamond core bit A drilling method for a concrete structural object, characterized in that a hole penetrating the concrete structural object without water cooling is formed in the recess.