JPH09286018A - Perforation device and perforation method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a perforation device and method which can quickly execute a perforation work of a concrete wall where a steel plate is embedded and which disperses with a blocking work of a space after perforation. SOLUTION: This is constituted of a concrete core pit 1 for perforating a concrete wall, a steel plate core pit 2 for perforating a steel plate, an adapter 3 which can attach and detach these core pits 1 and 2 and a main body of the device 5 to which this adapter 3 is fitted. And this is so structured that the adapter 3 has a fit part which is fitted to a drive shaft 57 of the main body of the device 5 at the rear end of the main body of the adapter 31 formed cylindrically, and an adapter side screw part in the inner periphery of the tip part of the main body of the adapter 31, and that respective core pits 1 and 2 have a cutting chip 12 (22) in a tip of the main body of the core 11 (21) formed cylindrically, and a pit side screw part which is screw fitted to the adapter side screw part at the outer periphery of the rear end part.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drilling device and a drilling method, and more particularly to a drilling device and a drilling method suitable for drilling a concrete wall in which a steel plate is embedded.

[0002]

2. Description of the Related Art When laying a new pipe or the like after the construction of a concrete structure, it is necessary to make a hole for the pipe in a necessary portion of the concrete wall.

In the conventional punching device for punching such a concrete wall body, a core bit dedicated to the concrete wall body is mounted on the drive shaft of the apparatus body, and the wall body is punched by the core bit.

In this case, a steel plate such as an H-shaped steel is buried in the concrete wall body depending on its location, but conventionally, such an H-shaped steel was avoided as much as possible for perforation.

However, there are cases where the H-shaped rope must be drilled due to restrictions such as the location of the hole.
In this case, conventionally, a steel plate was also perforated by a core bit dedicated to a concrete wall.

[0006]

The core bit dedicated to the concrete wall is not originally designed to punch a steel plate. Therefore, there is a problem that it takes time to punch a steel plate with the core bit dedicated to the concrete wall body, and the cutting tip provided at the tip of the core body is worn by the cutting of the steel plate.

Further, due to the problem of wear of the cutting tip, when drilling a concrete wall body in which a steel plate is buried, in consideration of this wear amount, a core bit slightly larger than the finally required hole diameter is used to make concrete. It was necessary to perforate the wall.

That is, as shown in FIG. 8, in the conventional punching device, in order to finally obtain the required hole diameter φ1, it was necessary to use a core bit having a hole diameter φ3 slightly larger than this. Therefore, the first concrete wall body 91 is perforated with a hole diameter of φ3, the second steel plate 92 is perforated with a hole diameter of φ2 (<φ3) as a result of wear of the cutting tip, and the last concrete wall body 93 is φ1 (<φ2). Will be drilled with a hole diameter of.

The hole 91 formed in this manner
When the pipe 94 (pipe diameter φ1) is inserted through a, 92a, and 93a, a gap A (φ3-φ1) is generated between the pipe 94 and the hole 91a on the first concrete wall 91 side. It is necessary to finally fill the gap A with a closing member (not shown) because of problems such as fixation and appearance of the inserted pipe 94. That is, there is a problem that extra work for closing the gap is required.

The present invention was devised to solve such a problem, and an object thereof is to perform a piercing operation of a concrete wall body in which a steel plate is embedded quickly, and
An object of the present invention is to provide a punching device and a punching method that do not require a work of closing a gap after punching.

[0011]

In order to solve the above problems, a drilling device according to claim 1 of the present invention is a core bit for concrete for drilling a concrete wall body, and a core bit for steel plate for drilling a steel plate. And an adapter body to which these core bits can be attached and detached, and an apparatus body to which this adapter is attached. The adapter is attached to the drive shaft of the apparatus body at the rear end portion of the adapter body formed in a cylindrical shape. A mounting portion is formed, and an adapter-side screw portion is formed on the inner peripheral surface or the outer peripheral surface of the tip portion of the adapter body, and the core bit has a cutting tip at the tip portion of the core body formed in a cylindrical shape. In addition to being formed, a bit side screw portion that is screw-fitted to the adapter side screw portion is formed on the outer peripheral surface or the inner peripheral surface of the rear end portion.

Further, a punching device according to a second aspect of the present invention is the punching device according to the first aspect, further comprising one or a plurality of tube tubes connected between the adapter and the core bit, The tube tube has a threaded portion formed on the outer peripheral surface of the rear end portion and the inner peripheral surface of the tip portion formed in a cylindrical shape, or on the inner peripheral surface of the rear end portion of the pipe body and the outer peripheral surface of the tip portion, respectively. By doing so, it is possible to connect the adapter and the core bit to the tube tube, and to connect the tube tubes to each other.

A drilling method according to a third aspect of the present invention includes a core bit for concrete for drilling a concrete wall body, a core bit for steel plate for drilling a steel plate, and an adapter to which the core bit can be attached and detached. , And a device main body to which this adapter is attached, at the time of starting the perforation of the concrete wall body, the concrete core bit is attached to the adapter to perforate the concrete wall body,
When punching a steel plate portion embedded in a concrete wall, the steel plate core bit is mounted on the adapter to punch the steel plate portion.

[0014]

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

FIG. 1 is an overall perspective view of a concrete core bit used in the punching device of the present invention, FIG. 2 is an overall perspective view of a steel plate core bit used in the punching device of the present invention, and FIG. 3 is a perspective view of the present invention. FIG. 4 is an overall perspective view of an adapter used in the punching device, FIG. 4 is an overall perspective view of a tube tube for extending the core bit, and FIG. 5 is an external view of the punching device of the present invention.

The drilling device of the present invention comprises a concrete core bit 1 for drilling a concrete wall, a steel plate core bit 2 for drilling a steel plate, and an adapter 3 for attaching and detaching these core bits 1, 2. This adapter 3
And one or a plurality of tube tubes 4 connected between the core bits 1 and 2, and an apparatus body 5 to which an adapter 3 is attached.

The apparatus main body 5 includes a support base 51 which is supported and fixed to a concrete wall body to be drilled by bolts 59 or the like.
And a rod-shaped support column 52 is erected on the support base 51. A sliding mechanism portion 53 that is movable in the axial direction (vertical direction in FIG. 5) is attached to the strut 52, and the sliding mechanism portion 53 is moved in the axial direction of the strut 52 by operating a handle 54. It can be held in a slidable state and a state in which it can be fixed at any position.

A rotary drive unit 56 including an electric motor 54 for rotating the core bits 1 and 2 and a speed reducer 55 is integrally attached to the side of the sliding mechanism unit 53. The adapter 3 is mounted on the drive shaft (spindle) 57 of the rotary drive unit 56. Then, the concrete core bit 1 or the steel plate core bit 2 is directly or indirectly connected to the adapter 3 by connecting the tube pipe 4. In FIG. 5, the tube tube 4 is connected.

Incidentally, the sliding mechanism portion 53 and the rotation driving portion 56.
Since the configuration of etc. is similar to that of the conventional punching device,
A more detailed description of the structure is omitted.

The adapter 3 has a mounting portion 32 mounted on the drive shaft 57 of the apparatus body 5 at the rear end portion of the adapter body 31 formed in a cylindrical shape.
An adapter side screw portion (female screw portion) 33 is formed on the inner peripheral surface or the outer peripheral surface (in the present embodiment, the inner peripheral surface) of the tip portion of 1.

In the concrete core bit 1, a cutting tip 12 is formed at the tip of a core body 11 formed in a cylindrical shape, and the outer peripheral surface or inner peripheral surface (outer peripheral surface in this embodiment) of the rear end is formed. A bit side screw portion (male screw portion) 13 that is screw-fitted to the adapter side screw portion 33 is formed.

In the steel plate core bit 2, a cutting tip 22 is formed at the tip of a core body 21 formed in a cylindrical shape, and the outer peripheral surface or inner peripheral surface (outer peripheral surface in this embodiment) of the rear end is formed. A bit side screw portion (male screw portion) 23 that is screw-fitted to the adapter side screw portion 33 is formed.

Further, in the tube tube 4, a male threaded portion 42 is formed on the outer peripheral surface of one end of a tube main body 41 formed in a cylindrical shape, and a female threaded portion 43 is formed on the inner peripheral surface of the other end. There is. Then, the male screw portion 42 is formed so as to be connectable (screw fit) to the adapter side screw portion 33 of the adapter 3 and the female screw portion 43 of the other tube pipe 4, and the female screw portion 43 is formed.
Is the bit side screw part 12 of the core bit 1 for concrete.
Also, it is formed so as to be connectable (screw fit) to the bit side screw portion 23 of the steel plate core bit 2.

A plurality of core bits for concrete 1, core bits for steel plate 2 and tube pipes 4 are prepared in accordance with the kinds of hole diameters to be bored, and a plurality of tube pipes 4 are prepared for each hole diameter. Has been done. Also,
Various shapes and structures of the cutting tip 12 of the concrete core bit 1 and the cutting tip 22 of the steel plate core bit 2 have been conventionally proposed, and the present invention has no particular feature in this respect. The drawing shows a general shape.

Next, using the punching device having the above-described structure, as shown in FIG.
The operation of making a hole in the concrete wall having the structure shown in FIG.

First, the support 51 is fixed to the concrete wall 6 to be drilled by bolts 59 or the like. here,
As shown in FIG. 7, the concrete wall body 6 has a structure in which a steel plate 62 is embedded.

Next, the diameter of the hole to be opened (for example, the hole diameter φ
According to 1), the adapter 3 having the hole diameter φ1 and the concrete core bit 1 are determined, and the necessary number of tube pipes 4 having the hole diameter φ1 are prepared depending on the thickness of the concrete wall body 6 to be drilled.

Then, the adapter 3 is mounted on the drive shaft 57 of the rotary drive unit 56, and then the concrete core bit 1 is mounted on the adapter 3. That is, the adapter side screw portion 33
The bit side screw portion 13 is screw-fitted to. At this time, if necessary, the required number of tube pipes 4 are connected between the adapter 3 and the concrete core bit 1.

When the setting of the punching device is completed in this way, the punching operation is started next.

That is, when the concrete core bit 1 is driven to rotate and moved downward (horizontally advancing in the case of drilling a standing wall body), the cutting tip 12 pressed against the first concrete wall body 61 is removed. , The perforation proceeds as if the wall of the contact portion is cut. FIG. 6 is a cross-sectional view showing a state in which the first concrete wall body 61 is perforated by the cutting tip 12. However, in FIG.
It shows a configuration in which the tube pipe 4 is not connected.

When the first perforation of the concrete wall 61 is completed, the concrete core bit 1 is once pulled out from the concrete wall 6 and the concrete core bit 1 is replaced with the adapter 3 (when the tube pipe 4 is connected). , The tube pipe 4), and then the steel plate core bit 2 is attached to the adapter 3 (the tube pipe 4 when the tube pipe 4 is connected), and the punching operation is started again.

That is, when the steel plate core bit 2 is lowered while being rotationally driven, the drilling progresses so that the cutting tip 22 pressed against the steel plate 62 through the hole 61a cuts the steel plate at the contact portion.

When the perforation of the steel plate 62 is completed, the steel plate core bit 2 is extracted again from the concrete wall body 6, and the steel plate core bit 2 is replaced with the adapter 3 (tube tube 4).
, The core bit 1 for concrete is attached again to the adapter 3 (or the tube pipe 4 if the tube pipe 4 is connected), and the drilling operation is performed again. Start.

That is, when the concrete core bit 1 is lowered while being rotationally driven, the cutting tip 12 pressed against the next concrete wall 63 through the holes 61a and 62a cuts the wall of the contact portion. As a result, a series of holes 61a, 62a, 63a penetrating the concrete wall 6 are finally opened.

Each of the through holes 61a, 62a, 63a is an opening having a hole diameter φ1. That is, according to the drilling device and the drilling method of the present invention, the concrete wall 6
1, 63 are perforated by the concrete core bit 1 and the steel plate 62 is perforated by the steel plate core bit 2, so that the cutting tip 1 of each core bit 1, 2 is perforated once.
Since there is almost no need to consider the wear of Nos. 2 and 22, the through holes 61a, 62a, 63a having substantially the same diameter φ1 can be opened in the thickness direction of the concrete wall 6.

Therefore, the through holes 61a, 62a, 6
When the pipe 7 (pipe diameter φ1) is inserted into 3a, there is almost no gap between the pipe 7 and the through-holes 61a, 62a, 63a, so that the work of filling the gap with the closing member after the pipe is unnecessary. Is. In addition, the steel plate 62
Since the core bit 2 for steel plate is used for drilling, the drilling time is significantly shortened as compared with the conventional drilling apparatus and method for drilling the steel plate 62 with the core bit 1 for concrete.

In the above embodiment, the diameter of the hole to be opened and the diameter of the pipe 7 are described as the same diameter φ1. However, in order to insert the pipe 7 into the through holes 61a, 62a, 63a, 7 has a diameter of through holes 61a, 62a, 63
As a matter of course, the diameter is slightly smaller than the hole diameter of a.

Further, in the above embodiment, the cooling water or the cooling air is not supplied to the cutting tips 12 and 22 during the boring operation, and the suction head for sucking the cutting pieces (see FIG. 6).
58) (shown by a chain double-dashed line therein) is not provided, but a configuration for supplying such cooling water or cooling air,
It is needless to say that the core bit of the present invention can be applied to the punching device having the structure in which the suction head 58 is provided.

When the concrete core bit 1, the steel plate core bit 2 and the tube pipe 4 are removed from the adapter 3, a dedicated wrench (not shown) may be used.

[0040]

The punching device according to the first aspect of the present invention comprises a concrete core bit for punching a concrete wall, a steel plate core bit for punching a steel plate, and an adapter to which these core bits can be attached and detached. , The adapter body is attached to the main body of the adapter, and the adapter forms a mounting portion to be mounted on the drive shaft of the main body of the adapter body at the rear end portion of the adapter body, which is formed in a cylindrical shape. The adapter bit is formed on the inner or outer peripheral surface of the core bit, and the core bit has a cutting tip formed on the tip of the core body formed into a cylindrical shape, and the adapter is formed on the outer or inner surface of the rear end. The bit side screw part that is screw-fitted to the side screw part is formed. The drilling method according to claim 3 of the present invention is a core bit for concrete for drilling a concrete wall, a core bit for steel plate for drilling a steel plate, an adapter capable of attaching and detaching these core bits, and this adapter. Equipped with the main body of the equipment, when starting the drilling of the concrete wall body, the core bit for concrete is attached to the adapter to drill the concrete wall body, and when drilling the steel plate part embedded in the concrete wall body, The core bit is attached to the adapter to punch the steel plate portion. That is, when piercing a concrete wall body in which a steel plate is embedded, the concrete wall body can be pierced by the concrete core bit and the steel plate can be pierced by the steel plate core bit, so that the piercing time can be shortened and the thickness direction of the concrete wall body can be reduced. Through holes of approximately the same diameter can be opened. Therefore, since there is almost no gap between the pipe and the through hole, the work of filling the gap with the closing member after the pipe is unnecessary.

The punching device according to the second aspect of the present invention comprises one or a plurality of tube pipes connected between the adapter and the core bit, and the tube pipes are tube-shaped main bodies. By forming a threaded portion on each of the outer peripheral surface of the rear end portion and the inner peripheral surface of the tip portion or the inner peripheral surface of the rear end portion of the pipe body and the outer peripheral surface of the tip portion, the adapter and the core bit and the tube pipe are connected. Since the connection and the connection between the tube pipes are possible, the length of the core bit can be freely adjusted according to the thickness of the concrete wall body to be drilled.

[Brief description of drawings]

FIG. 1 is an overall perspective view of a core bit for concrete used in a punching device of the present invention.

FIG. 2 is an overall perspective view of a steel plate core bit used in the punching device of the present invention.

FIG. 3 is an overall perspective view of an adapter used in the punching device of the present invention.

FIG. 4 is an overall perspective view of a tube tube for extending a core bit.

FIG. 5 is an external view of a punching device of the present invention.

FIG. 6 is a partially enlarged sectional view showing a state in which a concrete wall body is being drilled by the drilling device of the present invention.

FIG. 7 is a cross-sectional view showing a state of through holes in a concrete wall body punched by the punching device of the present invention.

FIG. 8 is a cross-sectional view showing a state of through holes in a concrete wall body drilled by a conventional punching device.

[Explanation of symbols]

 1 Core Bit for Concrete 2 Core Bit for Steel Plate 3 Adapter 4 Tube Pipe 5 Device Body 6, 61, 63 Concrete Wall Body 11, 21 Core Body 12, 22 Cutting Tip 13, 23 Bit Side Screw Part 31 Adapter Body 32 Mounting Part 33 Adapter Side Screw part 41 Tube body 42 Male screw part 43 Female screw part 57 Drive shaft 62 Steel plate

Claims (3)

[Claims] 1. A core bit for concrete for piercing a concrete wall, a core bit for steel plate for piercing a steel plate, an adapter to which these core bits can be attached and detached, and an apparatus main body to which this adapter is attached. In the adapter, a mounting portion to be mounted on the drive shaft of the device body is formed at a rear end portion of the adapter body formed in a cylindrical shape, and the adapter is provided on an inner peripheral surface or an outer peripheral surface of a front end portion of the adapter body. An adapter-side threaded portion is formed, and the core bit has a cutting tip formed on the front end portion of a core body formed in a cylindrical shape, and the adapter-side threaded portion and a screw thread on the outer peripheral surface or inner peripheral surface of the rear end portion. A perforating device, characterized in that a bit side screw part to be fitted is formed. 2. One or a plurality of tube pipes connected between the adapter and the core bit, wherein the tube pipe has an outer peripheral surface and a tip end of a rear end portion of a tube body formed in a cylindrical shape. Connection between the adapter and the core bit and the tube pipe by forming a threaded portion on the inner peripheral surface of the tube portion or the inner peripheral surface of the rear end portion of the pipe body and the outer peripheral surface of the tip portion, respectively, and the tube pipe. The punching device according to claim 1, wherein the two can be connected to each other. 3. A concrete core bit for piercing a concrete wall body, a steel plate core bit for piercing a steel plate, an adapter to which these core bits can be attached and detached, and an apparatus main body to which this adapter is attached. When starting the drilling of a concrete wall body, the concrete core bit is mounted on the adapter to drill the concrete wall body, and at the time of drilling a steel plate portion embedded in the concrete wall body, the steel plate core bit is mounted on the adapter. A perforating method comprising the steps of: