JPH0716941B2 - Boring method for concrete wall and fixing device for boring equipment used in the method - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for boring a concrete wall and a fixing device for boring equipment used in the method.

[0002]

2. Description of the Related Art For example, when it is desired to insert a pipe for drainage into a concrete wall made of an ALC plate or the like, it is necessary to bore the concrete wall in advance to provide a hole for the pipe. Such drainage pipes are usually placed at the top of the concrete wall out of the way,
Therefore, since it intersects with the beam material (shaped steel) that is a structural member of the steel frame of the building, conventionally, the concrete wall is bored as shown in FIG.

In the figure, reference numeral 33 designates an H-shaped steel as a beam member, which is provided with a pipe hole 34 in the web portion in advance and is attached to the uppermost portion on one surface side of the concrete wall 35. Reference numeral 36 is a pilot hole drilled from one surface side of the concrete wall 35, and a drill (not shown) is inserted through the piping hole 34 at a position corresponding to the center of the piping hole 34 of the H-shaped steel 33 in the upper portion of the concrete wall 35. Has been drilled by. 37 is a concrete wall 35
It is a scaffold constructed on the other surface side, and the worker 38 supports the boring device 39 by hand on this scaffold 37 and advances the tip of the device 39 toward the pilot hole 36, thereby The wall 35 is bored from the other surface side, that is, the side where the H-shaped steel 33 is not provided.

[0004]

However, in the above conventional technique, since the pilot hole 36 is bored from the other side of the concrete wall 35,
When the pilot hole 36 itself is misaligned, when the piping hole drilled by the boring device 39 and the piping hole 34 of the H-shaped steel 33 are eccentric and do not match, it becomes necessary to perform boring again. There is.

Further, as shown in FIG. 8, a concrete wall
Since there is usually a floor concrete 40 on the upper floor above 35 and the upper working space is extremely limited, it is very hard work for the worker 38 to carry out boring while supporting the boring device 39 as in the past. there were. In view of such circumstances, the present invention makes it possible to drill a concrete wall from the side where the section steel is provided, and a method for boring a concrete wall capable of facilitating and ensuring the construction and a boring device used for the method. The object is to provide a fixing device.

[0006]

[Means for Solving the Problems] In order to achieve the above object,
The present invention has taken the following technical means. That is, according to the first aspect of the present invention, the guide member 11 having the support member 14 for supporting the boring device 6 slidably via the rack 10 and the pinion 13 mechanism is attached to one surface side of the concrete wall 1 and the web. Flange part of section steel 3 with piping hole 5 in part 4
It is installed in a cantilever shape on 24, and after aligning the drilling side end of the boring device 6 toward the pipe hole 5, rotate the pinion 13 to place the boring device 6 on the concrete wall 1 behind the pipe hole 5. It is characterized by advancing toward and boring the concrete wall 1.

The invention according to claim 2 further comprises a pair of sandwiching plates for sandwiching the flange portion 24 of the mold steel 3 from the front and back sides on the rear surface side of the mounting plate 25 to which one end side of the guide member 11 is fixed on the front surface side. 26, 26 are erected from one side in the length direction of the mounting plate 25, and the guide member 11 is fixed to the part of the mounting plate 25 where the distance from the standing position of the holding plate 26, 26 to the lengthwise edge is large. The positioning holes 27 for use are provided at a plurality of positions displaced in the length direction of the mounting plate 25.

[0008]

According to the first aspect of the present invention, the boring device 6 is slidably supported by the guide member 11 provided in a cantilever manner on the flange portion 24 of the steel mold 3 through the support member 14, It is not necessary for the operator to hold the boring device 6 by himself. The end of the boring machine 6 on the drilled side is directly positioned from one side of the concrete wall 1 to the pipe hole 5 of the web part 4, and the bored hole of the concrete wall 1 and the pipe hole of the web part 4 are drilled. There is no misalignment between 5 and.

According to the second aspect of the present invention, as shown in FIGS. 6 and 7, for example, the fixing device 23 is inverted and fixed to the flange portion 24 to fix the web portion of the steel mold 3.
4 The boring device 6 is positioned according to the change in height.

[0010]

An embodiment of the present invention will be described below with reference to the drawings. 1 to 7, reference numeral 1 is a concrete wall made of an ALC plate or the like, and a floor concrete 2 made of an ALC plate or the like is arranged above the concrete wall. Reference numeral 3 is an H-shaped steel as a beam material, which is attached to the uppermost portion on one surface side of the concrete wall 1, and a web portion 4 thereof is provided with a piping hole 5 in advance.

Reference numeral 6 denotes a so-called boring device for core removal, which includes a driving portion 7 having an electric motor therein and a cylindrical hole portion 8 detachably attached to an output shaft at the tip of the driving portion 7. I have it. Around the hole side end of hole drilling part 8,
A super hard member made of diamond etc. is attached,
By pressing the end of the drilling portion 8 on the drilling side against the concrete wall 1 and advancing it, the core of the concrete wall 1 can be removed by rotating the drilling portion 8.

Reference numeral 9 denotes a support device for holding the boring device 6 horizontally and slidably, and a long guide member 11 having a rack 10 formed on the upper surface thereof, and the guide member 11
A base 12 that supports one end side of the above, and a support member 14 that is slidably fitted onto the guide member 11 via a rack 10 and a pinion 13 mechanism. That is, the support member 14 is mainly composed of a pair of left and right side plates 15 and 15 having a substantially trapezoidal shape and front and rear plates 16 and 17 each having an insertion hole for the guide member 11 therein. A rotary shaft 18 is installed between them. An operation handle 19 is provided at the protruding end of the rotating shaft 18,
A pinion that meshes with the rack 10 is provided at the center of the rotating shaft 18.
13 is fixed. Therefore, by manually rotating the operation handle 19, the support member 14 can be slid along the guide member 11 through the engagement between the rack 10 and the pinion 13. In addition, 20 is a fixture for fixing the boring device 6 to the upper end of the front plate 16 of the support member 14, and 21 is a stopper for fixing the support member 14 to the guide member 11. In addition, a long hole 22 for inserting a bolt is provided in the center of the base 12.

Reference numeral 23 designates the supporting device 9 as a flange portion of H-shaped steel.
It is a fixing device for fixing to 24, a rectangular mounting plate 25 to which the base 12 is fixed on the front surface side, and a pair of opposed sandwiching plates 26, 26 standing on the rear surface side of the mounting plate 25. It has and. As shown in FIGS. 4 and 5, the sandwiching plates 26, 26 are erected from one side in the length direction of the mounting plate 25 (from above in the figure), and the sandwiching plates 26, 26 are erected on the mounting plate 25. The guide member 11 is provided at the lower part of the one where the distance from the position to the longitudinal edge is large.
Positioning holes 27 for fixing the base 12 for supporting the base plate 12 are provided at a plurality of positions (three positions in this embodiment) displaced in the length direction of the mounting plate 25. Incidentally, 28 is a bolt screwed into each of the holding plates 26, 26, and 29 is a headless bolt screwed into the positioning hole 27. Further, 30 is a rib for reinforcing the sandwiching plates 26, 26.

Next, the working procedure of the boring method according to this embodiment, which is carried out by using the above-mentioned devices 6, 9 and 23, will be described. First, the holding plates 26, 26 of the fixing device 23 are fitted into the flange portion 24 of the H-shaped steel 3 and the bolts 28 are tightened to firmly fix the mounting plate 25 so that the mounting plate 25 faces the flange portion 24 in the vertical direction. Insert the headless bolt 29 protruding from the mounting plate 25 into the long hole 22 of the base 12 of the supporting device 9, and screw the nut 31 into the bolt 29 to attach the base 12 to the mounting plate 25. Tighten and fix. As a result, the guide member 11 of the support device 9 is
Will be provided in a cantilevered manner with respect to the flange portion 24 of the H-section steel 3 and in a direction perpendicular to the concrete wall 1.

Next, the boring device 6 is aligned so that the drilled side end faces the piping hole 5 of the web portion 4. At this time, for example, as shown in FIGS. 6 and 7, the base 12 may be tilted and fixed to the mounting plate 25 in accordance with the position of the piping hole 5.
Then, as shown in FIG. 1, by manually rotating the operation handle 19 to rotate the pinion 13, the boring device 6 is advanced toward the concrete wall 1 behind the pipe hole 5, and the concrete wall 1 is moved. Boring 1

Thus, according to this embodiment, the H-shaped steel 3
The boring device 6 is slidably supported with respect to the guide member 11 provided in a cantilever manner on the flange portion 24 of the operator, and the operator does not need to support the boring device 6 as in the conventional case, and the operator does not need to operate the operation handle 19. Since it is sufficient to operate it, the construction can be greatly facilitated and the boring device 6
Is directly positioned with respect to the pipe hole 5 of the web portion 4, so that there is no fear of a hand-back work as in the conventional case, and a reliable construction can be realized.

Further, according to the fixing device 23 of this embodiment, the sandwiching plates 26, 26 are erected from one side in the length direction of the mounting plate 25, and the distance from the erected position to the end in the length direction. Since the positioning holes 27 for the base 12 are provided at intervals in the portion of the mounting plate 25 having a longer length, as shown in FIGS. 6 and 7, by reversing the fixing device 23, the H-shaped steel 3 Even if the height of the web portion 4 changes significantly, the boring device 6 can be reliably aligned with the predetermined position where the pipe hole 5 is provided.

Incidentally, the present invention is not limited to the above-mentioned embodiment, and it goes without saying that, for example, as long as it has the web portion 4 and the flange portion 24, it can be applied also to a section steel other than the H section steel 3. . Also, the shape steel is not a beam material,
It can also be adopted when used as a pillar material, and is particularly effective when the pillar material is arranged at the corner of the concrete wall 1.

[0019]

As described above, according to the first aspect of the present invention, the boring device 6 can be advanced toward the concrete wall 1 only by the turning operation of the pinion 13, so that the construction work can be performed significantly. Besides, the boring device 6 is positioned directly with respect to the piping hole 5 of the web part 4 without any hand-back work.
The construction can be ensured.

According to the second aspect of the present invention, the boring device 6 is positioned in accordance with the change in the height of the web portion 4 of the steel mold 3 by reversing and fixing the fixing device 23 to the flange portion 24. Therefore, the versatility of construction can be increased.

[Brief description of drawings]

FIG. 1 is a side view of a supporting device and a fixing device in use according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view of a supporting device.

FIG. 3 is a cross-sectional view of a support member.

FIG. 4 is a side view of the fixing device.

FIG. 5 is a rear view of the same.

FIG. 6 is a front view showing a usage state of the fixing device.

FIG. 7 is a front view of the same.

FIG. 8 is a side view showing a conventional boring method.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Concrete wall 3 Type steel (H type steel) 4 Web part 5 Piping hole 6 Boring device 10 Rack 11 Guide member 13 Pinion 14 Support member 24 Flange portion 25 Mounting plate 26 Clamping plate 27 Positioning hole

Claims (2)

[Claims] 1. A support member for supporting a boring device (6)
A guide member (11) having a rack (10) and a pinion (13) mechanism slidably attached to the concrete wall (1) is attached to one side of the web portion (4) and a pipe hole is provided. It is provided in a cantilever shape on the flange part (24) of the shape steel (3) having (5), and after aligning the boring device (6) with the drilling side end facing the pipe hole (5), the pinion (13) ) Turn the boring device
A boring method for a concrete wall, which comprises boring the concrete wall (1) by advancing the (6) toward the concrete wall (1) behind the pipe hole (5). 2. The flange portion (24) of the steel mold (3) is provided on the back side of the mounting plate (25) to which one end side of the guide member (11) is fixed on the front side.
A pair of opposed sandwiching plates (26) (26) sandwiching the two from the front and back are erected from one side in the length direction of the mounting plate (25), and the sandwiching plates (26) (26) are erected on the mounting plate (25). Positioning hole for fixing the guide member (11) at the part where the distance from the position to the end in the longitudinal direction is large.
A fixing device for a boring device, wherein (27) is provided at a plurality of positions displaced in the length direction of the mounting plate (25).