JP2726322B2 - Tape for assigning connection angle of underground pipe and method of assigning angle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an angle used for allocating a drilling position of a connection hole of an underground pipe to a peripheral surface of a side mass forming a manhole, a sewage basin, or the like. The present invention relates to an allocation tape and an angle allocation method using the angle allocation tape.

[Conventional technology]

Various basins are installed in the sewer pipeline for various purposes. For example, in order to inspect the sewage water quality and inspect and clean the pipeline, each building has a house basin, a sewer basin between the sewer main and the house basin, and a manhole in the sewer main. Are located.

The inflow pipes and outflow pipes connected to the side blocks constituting these boxes can be smoothly attached to the squares of the boxes within the range of 90 to 270 degrees so that the connection angle is not acute. Although it is necessary to perform a proper drainage, the connection angle differs depending on the surrounding conditions such as a road and a building.

Therefore, when laying pipes for sewerage, design a plan such as a pipe laying plan or vertical sectional view that describes information on the installation position of these pits and the connection angle of underground pipes connected to this pit. Drawings are prepared in advance, and the side blocks of the square used for this are usually shipped from the factory with connection holes for buried pipes buried in various places on the peripheral surface based on this design drawing.

[Problems to be solved by the invention]

However, at the actual installation site, there are cases where underground objects such as water pipes and gas pipes, rocks, etc., which cannot be predicted at the stage of drafting the above-mentioned design drawings, block the planned locations of outflow pipes and inflow pipes. Often there.

It is necessary to change the installation position of pits installed in such places according to the situation at the site, and it is necessary to change the connection angle of underground pipes in various places along with the change of the installation position of this pit. Become.

Therefore, for the basin installed in such a place, after determining the installation position, measure the connection angle of the buried pipes in various places connecting the basins using transit etc.
Based on the measurement results, connection holes are drilled on the peripheral surface of the side lump at the site.

However, in the normal state, it is not easy to assign this connection angle to the peripheral surface of the tubular side lump whose position is not known, especially in the side lump having a cross-sectional shape such as an ellipse or an oval. Since the curvature of the surrounding surface changes depending on the connection position of the underground pipe, complicated calculations are required,
The drilling work on site has become more troublesome.

Therefore, an object of the present invention is to display the angle from the reference position by sticking to the peripheral surface of the side lump, and to allocate the drilling position of the connection hole of the underground pipe by this angle scale. An object of the present invention is to provide an allocation tape and an angle allocation method for using the angle allocation tape to allocate a drilling position of a connection hole of an underground pipe.

[Means for solving the problem]

The tape for laying the connection angle of the underground pipe of the present invention,
In order to achieve the object, a sign portion is formed at one end or the center of the band to align with a reference portion formed around the side mass, and the side of the band is formed on the surface of the band. It is characterized by displaying an angle scale obtained by developing an angle around a cell core on a peripheral surface of a lump.

In the tape for angle allocation in which a sign is formed at the end of the band, the above-mentioned angle scale is displayed on the surface of the band in two upper and lower stages, and the upper and lower angle scales are respectively indicated by the above-mentioned sign portions. It may be displayed in a range from 180 degrees to 90 degrees and from 180 degrees to 270 degrees based on the formation position.

Further, in the tape for angle allocation in which the matching portion is formed in the center of the band-like body, the angle scale at the forming position of the matching portion is set to 180 degrees, and 90 degrees and 270 degrees from this position toward both ends.
It may be displayed in a range of degrees.

The method of laying a connection angle of an underground pipe using this tape for angle assignment is to align a sign formed on the tape for angle assignment with a reference portion formed on the peripheral surface of the side lump, and the tape for angle assignment. Is affixed to the peripheral surface of the side lump, and the drilling positions of the mounting holes of each tube are assigned according to the angle scale displayed on the surface.

[Action]

The tape for laying the connection angle of the underground pipe of the present invention,
At one end or the center of the band, a matching portion is formed to match the reference portion formed on the peripheral surface of the side lump, and the core of the peripheral surface of the side lump is formed on the surface of the band. Since the angle scale that expands the surrounding angle is displayed,
If the matching part of this tape for angle assignment is aligned with the reference part of the side lump and attached in the circumferential direction of the side lump, the connection hole of the underground pipe can be cut without obtaining the core of the cylindrical side lump. Hole positions can be accurately assigned.

〔Example〕

Hereinafter, features of the present invention will be specifically described based on embodiments shown in the drawings.

FIGS. 1 to 3 show a method of obtaining a connection angle of an inflow pipe (not shown) on a peripheral surface of a side mass having a circular cross section;
FIG. 3 is a diagram for explaining an angle allocating tape used at that time.

As shown in FIG. 1, the side mass 1 usually has a space defined by a mold divided into right and left by a plane passing through the center line of the opening 3 to which the inflow pipe 2 is attached and an inner mold. It is manufactured by putting concrete in it. Therefore, the opening 3
A projection or linear reference portion 4 is formed on the peripheral surface of the side lump 1 on the side opposite to the above by using the joint of the left and right molds. In addition to the positive formation of the reference portion 4 as described above, a linear trace that occurs naturally at the joint of the left and right molds may be used as the reference portion 4.

The reference portion 4 is formed on the opposite side of the opening 3 of the side lump 1, that is, at a position 180 degrees from the opening 3.

An angle assignment tape 5 to be described later is adhered to the reference portion 4 and assigned to the peripheral surface of the side lump 1 at a position where the connection hole of the inflow pipe is pierced.

As shown in FIG. 2, the tape 5 for angle assignment has a keyhole-shaped matching portion 6 for alignment with the reference portion 4 of the side lump 1 at the center of the band. In addition, the sign portion 6 is formed as a hole as described above, and a mark of Δ shape is displayed near the upper and lower ends of the belt-like body, as long as the mark portion 6 can be aligned with the reference portion 4 in short. Anything may be used.

Then, at the position where the sign 6 is formed, the sign 6
A number indicating that the position is at an angle of 180 degrees from the opening 3 is displayed, and from the formation position of the code portion 6 toward both sides,
Angles around the cell core on the peripheral surface of the side lump 1 are developed, and the angle scale 7 is displayed in a range of 90 degrees and 270 degrees.

If the matching portion 6 of the angle assignment tape 5 is aligned with the reference portion 4 of the side lump 1 and attached along the circumferential direction of the side lump 1 as shown in FIG. The angle of a predetermined position on the peripheral surface of the side lump 1 as a starting point can be read from the angle scale 7.

Therefore, if the measurement result of the connection angle of each pipe body described above at the site is written on this angle scale 7,
The drilling position of the connection hole of the inflow pipe can be accurately allocated without finding the square O of the side lump 1.

The interval between the angle scales 7 developed and displayed on the angle assigning tape 5 is different depending on the outer diameter and the shape of the side lump 1. It is desirable to print the display unit 8 for specifying the target side lump 1.

If several kinds of the angle assignment tapes 5 are prepared, the drilling positions of the connection holes of the inflow pipe can be accurately assigned to various side blocks 1.

FIG. 4 shows that a matching portion 6 is formed at one end of the strip.
From the position where the sign 6 is formed, the angle scale 7a is displayed on the lower stage in the range of 180 to 90 degrees toward the other end, and the angle scale 7b is displayed on the upper stage in the range of 180 to 270 degrees. 1 shows a tape 5 for use.

The angle assigning tape 5 is attached to the reference portion 4 of the side lump 1 in such a manner that the matching portion 6 formed at one end thereof is aligned with the reference portion 4 of the side lump 1 in the circumferential direction in which the inflow pipe of the side lump 1 is to be attached. If the measurement result of the connection angle of the inflow pipe at the site is written on either the angle scale 7a or the lower angle scale 7b, the flow rate of the inflow pipe can be determined without obtaining the core O of the side mass 1 as in FIG. The drilling positions of the connection holes can be accurately allocated.

In this case, the angle allocating tape 5 needs to be a strip having a length almost half that of the tape shown in FIG. 2, so that the work of sticking to the peripheral surface of the side lump 1 becomes easy.

In the case of the side lump 1 having an elliptical or elliptical cross-sectional shape used on a narrow road, when the angle around the cell O on the peripheral surface is shown in a developed view, each angle scale is The interval changes. For example, FIG.
In the side lump 1 having an oval cross section shown in FIG. 1, a reference portion 4 formed on the peripheral surface of the side lump 1 on the opposite side of the opening 3 to which the outflow pipe 2 is attached passes through the square O and forms a reference with the opening 3. The distance between the angle scales in the developed view gradually decreases toward a line orthogonal to the line connecting the portion 4.

Therefore, the angle scale 7 on the surface of the tape 5 for angle assignment used in such a side lump 1 is displayed in a state corresponding thereto.

As described above, the connection angle of the outflow pipe can be easily allocated to the peripheral surface of the side lump 1 by using the angle allocation tape 5 corresponding to various side lump 1. Then, the underground pipe connecting the side blocks 1 having the connection holes of the inflow pipes drilled in this way always faces toward the core O of the side block 1, so that the underground pipe in the box after the pipeline is laid is The flow of sewage becomes smooth.

〔The invention's effect〕

As described above, in the present invention, the connection angle of the buried pipes in various places can be assigned to the peripheral surface of the side lump only by sticking the angle-allocating tape on the peripheral surface of the side lump. In addition, if the side blocks obtained by drilling the connection holes of each pipe using this angle assignment tape are connected by an underground pipe, each pipe will always head toward the core of the tub, so pipe laying The flow of the sewage in the subsequent basin becomes smooth, and the sewage does not stay in the basin.

[Brief description of the drawings]

FIGS. 1 to 3 are diagrams for explaining a method of allocating a connection angle of an inflow pipe (not shown) to a peripheral surface of a side block having a circular cross section, and an angle allocating tape used at that time. FIG. 4 shows an angle allocating tape in which angle scales are displayed on the upper and lower two stages of the band. FIG. 5 is a diagram for explaining the angle assignment when drilling the connection hole of the inflow pipe on the peripheral surface of the side block having the irregular cross section. 1: Side mass, 2: Outflow pipe 3: Opening, 4: Reference part 5: Tape for angle assignment 6: Matching part, 7: Angle scale 8: Display part, O: Square core

Claims (4)

(57) [Claims] 1. A sign portion for aligning with a reference portion formed on a peripheral surface of a side lump is formed at one end or a center of the band, and the side lump of the side lump is formed on a surface of the band. A tape for laying a connection angle for an underground pipe, wherein an angle scale obtained by developing an angle around a square core on a peripheral surface is displayed. 2. An angle scale according to claim 1, wherein the angle scale is displayed on the surface of the band in two upper and lower stages, and the upper and lower angle scales are respectively located at the ends of the band. 180 to 90 degrees and 180 to 27 degrees
A tape for laying a connection angle for an underground pipe, which is displayed in a range of up to 0 degrees. 3. The angle scale according to claim 1, wherein the position of the sign formed at the center of the band is 180 degrees, and the angle scale is displayed in a range of 90 degrees and 270 degrees toward both ends from this position. A tape for laying connection angles of underground pipes, characterized in that: 4. A code portion formed on an angle allocating tape is aligned with a reference portion formed on a peripheral surface of the side mass, and the angle allocating tape is attached in a circumferential direction of the side mass. A method of allocating a connection angle of an underground pipe, wherein a drilling position of a connection hole of the underground pipe is allocated according to an angle scale displayed on a surface thereof.