JPH04289331A - Drilling of cylindrical block for manhole - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for accurately, simply and quickly drilling holes for outflow pipes and inflow pipes at desired locations in a cylindrical block for constructing a manhole.

0002

2. Description of the Related Art Japanese Patent Publication No. 62-42095 discloses a method of drilling holes for outflow pipes and inflow pipes in required parts of a cylindrical block for constructing a manhole.

[0003] In this method, a head (the difference in height indicating the difference between the bottom height of an outflow pipe and an inflow pipe) and an angle (with the outflow pipe as the base point) are set at required locations on the outer peripheral surface of a cylindrical block for constructing a manhole. After marking the installation position of the inflow pipe (the angle of the inflow pipe with respect to the outflow pipe), a bit of a predetermined diameter was attached to the tip using the marks of these heights and angles as standards. The holes were drilled using a hole drilling machine.

0004

[Problems to be Solved by the Invention] In the conventional drilling method described above, it was necessary to mark the drop and angle at the required portions of the cylindrical block prior to drilling. In addition to the problem that the work was troublesome because it took time and effort, the scribing work was the most time-consuming part of the whole work, so the efficiency of the drilling work was extremely poor. was there. This is a serious problem, especially when drilling multiple holes.

The present invention provides a method for drilling holes in cylindrical blocks for constructing manholes (hereinafter referred to as "boring"), which eliminates the need for such labor-intensive and time-consuming scribing work and achieves labor-saving and efficient drilling work. This is related to the hole method).

[0006]

[Means for Solving the Problems] One of the drilling methods according to the present invention includes a rotating device 2 equipped with a rotating support 1 that can rotate around a vertical axis, and a concrete drilling bit that can move up and down. This is a method of drilling holes 6 for outflow pipes and inflow pipes in required parts of a cylindrical block 7 for constructing a manhole using a hole drilling machine 4 equipped with a hole 3 at the tip.
The reference part 25 at the lower end of the outer periphery is connected to the reference part 2 of the rotating support 1.
3 and placed it upright on the rotary support 1 and set it in a fixed state, and then rotated the rotary support 1 by a set angle around the axis according to the instructions in the drilling instruction sheet that specifies the drilling site. ,
Also, move the bit 3 vertically by a set amount according to the instructions in the drilling instructions, thereby aligning the center of the bit 3 with the center of the hole to be formed, and then rotating the bit 3 and moving the bit 3 by a set amount. The feature is that the hole is drilled by moving the hole forward.

[0007] In addition to the drilling method according to the present invention, there is a rotating device 2 equipped with a rotating support 1 that can rotate around a vertical axis, and a concrete drilling bit 3 that is movable up and down at the tip. Holes 6 for outflow pipes and inflow pipes are drilled using a hole drilling machine 4.
This is a method of drilling a hole in a required part of a cylindrical block 7 for configuring a manhole. The rotary support 1 is aligned with the reference portion 23.
After placing the rotary support 1 upright on top of the hole and setting it in a fixed state, the rotary support 1 is rotated by a set angle around the axis according to the instructions in the drilling instructions that specify the drilling location, and the bit 3 is rotated by a set angle according to the instructions in the drilling instructions that specify the drilling location. According to the instructions, move the bit 3 by a set amount in the vertical direction, thereby aligning the center of the bit 3 with the center of the hole to be formed, and then move the bit 3 forward while rotating the bit 3 to drill the hole. This is a characteristic feature.

In the case of the latter method, the outer peripheral portion of the cylindrical block 7 facing the step attachment portion 33 is a continuous flat surface 10 extending from the lower end to the upper end, and the flat surface 10
It is preferable to use the center portion of the lower end as the reference portion 25 because the reference portion 25 can be made clear.

Further, the cylindrical block 7 has a reference portion 25 at the lower end of its outer periphery aligned with the reference portion 23 of the rotary support, and protrusions are provided on the upper surface of the rotary support 1 at concentric intervals. When three or more of the provided engaging protrusions 17 are to be engaged with the circular inner peripheral portion 11 of the cylindrical block 7, it is easy to position and fix the cylindrical block 7 on the rotating support. This is preferable because it allows for

[0010] "Cylindrical block for manhole construction"
The term refers to a block for configuring a manhole that has a cylindrical or square tube shape, and includes not only the straight wall blocks that make up the manhole, but also the cylindrical blocks that have a bottom plate attached to the lower end and make up the frame block. It is a concept.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Examples of the present invention will be described below with reference to the drawings. The drilling method according to the present invention includes a rotating device 2 equipped with a rotating support 1 that can rotate around a vertical axis, as shown in FIG.
Using a drilling machine 4 equipped with a vertically movable concrete drilling bit 3 at the tip, an outflow pipe 5a as shown in FIG.
In this method, holes 6 for use and inflow pipes 5b are drilled at required locations in a cylindrical block 7 for constructing manholes.

In this embodiment, the cylindrical block 7 has:
As shown in FIGS. 2 and 3, the planar form is a horse fastener, which has the same inner diameter, is open at the upper and lower ends, and has a continuous flat surface 10 formed on a part of its outer circumference 9 from the lower end to the upper end. The required number of steps 12 are embedded in the thick part of the circular inner peripheral part 11 in the vertical direction by embedding the required number of steps 12 in the thick part. It will be installed in parallel.

Further, as shown in FIGS. 1 to 4, the rotary support 1 is formed of a disk body 13 in this embodiment, and is rotatable clockwise or counterclockwise around a vertical axis. It is provided on the machine stand 14 so that. The upper surface 15 of the disk body 13 has an upper surface portion 1 as shown in FIG.
6 is formed in a tapered shape and can come into contact with the inner circumferential portion 11 of the cylindrical block 7 (see FIG. 3); an engaging protrusion 1 for positioning;
7 are formed to protrude concentrically at an angular pitch of 90 degrees as shown in FIG. 1, depending on the inner diameter of the cylindrical block 7 placed on the disc body. In this embodiment, since a plurality of types of cylindrical blocks having different inner diameters are placed on the disc body 13, the concentric circles 18 as shown in FIG.
There are a plurality of engagement protrusions 17 on each concentric circle.
An insertion hole 20 into which an insertion protrusion 19 protrudingly formed is inserted is provided at the lower end of the holder. Further, an angle display scale 22 is provided on the outer peripheral surface 21 of the disc body 13. A score line 24 is formed on the upper surface 15 of the disc body 13, extending from the center of rotation toward the zero degree angle portion of the angle display scale 22, that is, the reference portion 23. The cylindrical block 7 is
When placing it on the disk body 13, as shown in FIG.
The reference portion 25, which is the center portion of the lower end of the flat surface 10 of the cylindrical block 7, is made to match the score line 24 (reference portion 23). Also, on the machine base 14, there is an angle display scale 2.
A pointer 26 pointing to point 2 is attached, and this pointer 26
The rotation angle of the rotary support 1 is set by the angle instruction 6. Note that the pointer 26 is provided, for example, at the center of the front surface of the machine base 14 so that the notch line 24 is perpendicular to the axis of the bit 3 when the pointer 26 indicates a zero angle. In a state where the rotation angle of the rotary support 1 is set as required, the rotary support 1 is fixed by a stopper (not shown) fixed to the machine base.

On the other hand, as shown in FIGS. 1 and 3, the hole-drilling machine 4 is equipped with a concrete-drilling bit 3 having a predetermined diameter at its tip. The drive screw shaft 28 is guided by the guide column 27 of the book.
It is possible to move up and down by forward and reverse rotation around the axis. Also, on the side of the other guide column 27a, there are marks shown in FIGS. 1 and 6.
As shown in FIG. 2, a scale 29 extending in the vertical direction is provided, and a pointer 32 pointing to a display scale 31 is attached to a support base 30 that supports the drilling machine 4. The pointer 31 is designed to point to the zero mm scale (display scale 31a shown in FIG. 6) when the center of the bit 3 is aligned with the lower end of the cylindrical block 7 as shown by the two-dot chain line in FIG. There is. The amount of vertical movement of this drilling machine 4, ie, the amount of vertical movement of the bit 3, is set to a desired value by instructions from the pointer 32. Further, the bit 3 is mounted on a cylindrical block 7 that is placed and fixed upright on the rotary support 1 by a linear motion device (not shown) installed in the drilling machine 4, as shown by the arrow in FIG. By moving forward and backward while rotating about a horizontal axis, holes 6 for outflow pipes and inflow pipes can be drilled in the cylindrical block 7. The bit 3 shown in FIG. 2 shows a state where it is in contact with the outer peripheral part 9 of the cylindrical block 7,
Further, the bit 3 indicated by a dashed line in FIG. 3 shows the state after drilling.

Using the rotating device 2 and the hole drilling machine 4 having the above-described configuration, holes 6a for outflow pipes are formed in, for example, the cylindrical block 7 constituting the frame block, as shown in FIGS. 7 to 9.
Next, a method of drilling the holes 6b and 6c for the inflow pipes will be explained.

First, as shown in FIGS. 2 to 3 and FIG.
5) to match the notched line 24 of the disc body 13 (by this matching, the reference portion 25 automatically matches the reference portion 23), and the four engaging protrusions 17, 17, 17, whose positions are set in advance.
17 is placed on the disc body 13 so as to be in contact with the circular inner peripheral part 11 of the cylindrical block 7. In this state, the cylindrical block 7 is prevented from moving laterally in the horizontal plane by position regulation by each engaging protrusion 17, and rotation around the axis is also prevented by the weight of the cylindrical block 7, whereby the cylindrical block 7 is placed upright on the rotating support 1 and is in a fixed state.

Next, according to the instructions in the drilling instructions, the rotary support 1 is rotated by a set angle to determine the angle, and the bit 3 located at the lowest end is moved upward by a set amount to adjust the drilling height. Perform positioning.

As shown in FIGS. 8 and 9, the cylindrical block 7
Clockwise θ1=9 with the lower end center portion (reference portion 25) of the flat surface 10 facing the step attachment portion 33 as a reference.
Drill a hole 6a for the outflow pipe centering on the position of 0 degrees, height H1 = 220 mm from the tube bottom, and clockwise at the position θ2 = 180 degrees, height H2 = 300 m from the tube bottom.
A hole 6b for the first inflow pipe is drilled centering on the position m, and a hole 6b for the second inflow pipe is further drilled clockwise at a position θ3 = 270 degrees and a height H3 = 460 mm from the bottom of the pipe. An example of the case where the hole 6c is drilled is as follows. Note that the hole 6a for the outflow pipe and the hole 6 for the first inflow pipe
The inner diameters of the holes 6c for the second inflow pipe are both 200 mm and 400 mm.

To drill the hole 6a for the outflow pipe, first,
With the pointer 26 indicating zero degrees on the angle display scale, the stopper is activated to fix the rotary support 1 (see FIG. 2). Next, according to the scale instructions of the pointer 32, the hole drill 4 is moved upward so that the center of the bit 3 at the lowest position is located at a height of 220 mm, and the hole drill 4 is fixed at that position. This aligns the center of the bit 3 with the center of the hole for the outflow tube to be formed. Thereafter, the bit 3 is rotated and moved forward to drill a hole 6a for an outflow pipe having a diameter of 200 mm (see FIGS. 3 and 7). To drill the hole 6b for the first inflow pipe, rotate the cylindrical block 7 90 degrees counterclockwise and fix the rotary support 1 in this state, and then make sure that the center of the bit 3 is Further raise the hole drill 4 so that it is at a position 300 mm from the bottom of the pipe, fix the hole drill in this state, and drill the hole 6b for the inflow pipe with the bit 3 in the same manner as above (see Fig. 7). ). When drilling the hole 6c for the second inflow pipe, replace the bit with a larger diameter bit, rotate the cylindrical block 7 further 90 degrees counterclockwise, and fix the rotating support 1 in this state. After that, the drill bit 4 is further raised so that the center of the bit 3 is located 460 mm from the bottom of the tube, and after fixing the drill bit 4 in this state, the bit 3 is removed in the same manner as above. A hole 6c for the second inflow pipe having a diameter of 400 mm is drilled. Note that FIG. 7 shows the frame block after the holes have been drilled to which the bottom plate 34 with the holes drilled is attached.

FIG. 10 shows a cylindrical block 7 having a cylindrical shape without a flat surface 10, with the reference portion 25 at the lower end of the outer periphery of the step attachment portion 33 aligned with the score line 24 of the disc body 13 ( Due to this matching, the reference part 25 automatically matches the reference part 23), for example, the position of the reference part 25 is set in advance as described above.
The disc body 1 is arranged such that the engaging protrusions 17, 17, 17, 17 are in contact with the circular inner circumference 11 of the cylindrical block 7.
3 and placed in a fixed state. Then, in the same manner as above, the rotary plate 13 is rotated by a set angle around the axis according to the instructions in the drilling instructions, and the bit 3 is moved up and down by a set amount, thereby aligning the center of the bit 3 with the hole to be formed. Then, by rotating the bit 3 and moving it forward, holes 6 for the outflow pipe and the inflow pipe are drilled.

[0021]

[Effects of the Invention] Since the present invention has the above-described configuration, it achieves the following excellent effects. ■ The drilling method according to the present invention uses a rotating device equipped with a rotating support that can rotate around a vertical axis, and a drilling machine equipped with a concrete drilling bit that can move up and down. The cylindrical block is placed upright on the rotating support with the reference part at the lower end of its outer periphery aligned with the reference part of the rotating support and fixed, and then the rotating support is drilled. Rotate the bit by the set angle according to the instructions in the drilling instructions, and move the bit up and down by the set amount according to the instructions in the drilling instructions, thereby determining the center of the hole to be drilled, and then drill the hole with the bit. It is something. In this way, according to the present invention, only by rotating the rotary support and vertically moving the drilling machine,
The center position of the hole to be drilled can be easily determined.

Conventionally, as mentioned above, the head (
A scribed line between the height difference between the bottom height of the outflow pipe and the bottom height of the inflow pipe) and the angle (the angle of the inflow pipe with respect to the outflow pipe, which represents the installation position of the inflow pipe as an angle with the outflow pipe as the reference point) Since it was necessary to determine the center of the hole to be drilled by applying marks, there were problems in that it took a lot of time and effort to scribe, which made the work troublesome, and the efficiency of the drilling work was reduced. There was a bad problem.

However, according to the present invention, the drilling work can be carried out mechanically without the need for such labor-intensive and time-consuming scribing work, resulting in significant labor savings and efficiency in the drilling work. It can be achieved. Furthermore, since manual marking is not required, there is no risk of mistakes occurring in the work.

[0024] In particular, when the cylindrical block is formed into a cylindrical shape and the reference portion at the lower end of its outer periphery is the lower end of the outer periphery of the step attachment portion of the cylindrical block, the step attachment portion is the reference portion for angle setting. This is a clearly visible part at a glance, so when the rotating support is rotated by a set angle, it is possible to check at a glance whether the direction of rotation and angle of rotation are accurate. Accuracy of drilling can be ensured. . In addition, when the cylindrical block is formed into a cylindrical shape, and the outer circumferential portion facing the step mounting portion is a continuous flat surface extending from the lower end to the upper end, and the central portion of the lower end of the flat surface is used as the reference portion, the reference portion is The parts become clearer.

■ Also, the cylindrical block is formed into a cylindrical shape,
The reference part at the lower end of the outer periphery is aligned with the reference part of the rotary support, and three or more engaging protrusions protruding from the upper surface of the rotary support at intervals on a concentric circle are arranged in a cylindrical shape. When engaging with the circular inner circumferential portion of the block, it is preferable because positioning and fixing of the cylindrical block on the rotary support can be facilitated.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an example of an apparatus for implementing the hole drilling method of the present invention.

FIG. 2 is a perspective view showing a state in which a cylindrical block having a flat surface is placed upright on a rotating support and fixed, together with the positional relationship of bits.

FIG. 3 is an explanatory diagram illustrating the hole drilling method of the present invention.

FIG. 4 is a perspective view showing an engaging protrusion.

FIG. 5 is a perspective view showing a rotary support body as a disc body.

FIG. 6 is a perspective view showing a scale.

FIG. 7 is a perspective view showing a frame block with holes drilled therein.

FIG. 8 is a diagram showing the angle of the drilling site.

FIG. 9 is a diagram showing the height of a drilling site.

FIG. 10 is a perspective view showing a state in which a perfectly circular cylindrical block having no flat surface is placed upright on a rotating support and fixed, together with the positional relationship of bits.

[Explanation of sign]

1 Rotating support body 2 Rotating device 3 bits 4. Hole drilling machine 6 Holes for outflow pipe and inflow pipe 7 Cylindrical block 10 Flat surface 11 Inner periphery of cylindrical block 17 Engagement protrusion 23 Reference part of rotating support body 25 Reference part of cylindrical block

Claims (4)

[Claims] Claim 1: Using a rotating device 2 equipped with a rotary support 1 that can rotate around a vertical axis, and a drilling machine 4 equipped with a concrete drilling bit 3 that can move up and down, at its tip,
This is a method of drilling holes 6 for outflow pipes and inflow pipes in required parts of a cylindrical block 7 for constructing a manhole.
After placing the rotary support 1 upright on the rotary support 1 and fixing it in a fixed state, the rotary support 1 is rotated at a set angle around the axis in accordance with the instructions in the drilling instructions that specify the drilling location. Also, move the bit 3 vertically by a set amount according to the instructions in the drilling instructions, so that the center of the bit 3 matches the center of the hole to be formed, and then rotate the bit 3. A method for drilling a hole in a cylindrical block for constructing a manhole, characterized in that the bit 3 is moved forward while drilling. 2. Using a rotating device 2 equipped with a rotating support 1 that can rotate about a vertical axis, and a drilling machine 4 equipped with a concrete drilling bit 3 that can move up and down, at the tip,
This is a method of drilling holes 6 for outflow pipes and inflow pipes in required parts of a cylindrical block 7 for constructing a manhole. After aligning the part 25 with the reference part 23 of the rotary support 1 and placing it upright on the rotary support 1 to set it in a fixed state, the rotary support 1 is attached to the drilling instruction sheet that specifies the drilling part. Rotate the bit 3 by the set angle around the axis according to the instructions, and move the bit 3 up and down by the set amount according to the instructions in the drilling instructions, thereby aligning the center of the bit 3 with the center of the hole to be formed, and then A method for drilling a hole in a cylindrical block for constructing a manhole, the method comprising: drilling a hole by moving the bit 3 forward while rotating the bit 3 after drilling. 3. The outer peripheral portion of the cylindrical block 7 facing the step attachment portion 33 is a continuous flat surface 10 extending from the lower end to the upper end, and the center portion of the lower end of the flat surface 10 is a reference point. 3. A method for drilling holes in a cylindrical block for constructing a manhole according to claim 2. 4. A tubular block 7 having a cylindrical shape has a reference portion 25 at the lower end of its outer periphery aligned with a reference portion 23 of the rotation support 1, and is spaced concentrically on the upper surface of the rotation support 1. Three or more of the engaging protrusions 17 protruding from the cylindrical block 7 are engaged with the circular inner peripheral part 11 of the cylindrical block 7, and placed upright on the rotary support 1 in a fixed state. A method for drilling holes in a cylindrical block for constructing a manhole according to claim 1 or 2.