JPH086861Y2 - Oval tube tilt correction tool - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inclination correcting tool for an oval tube, particularly a rigid vinyl chloride oval tube for sewers.

[0002]

2. Description of the Related Art Oval tubes are used in sewer pipelines because they have a gentle gradient and excellent scavenging ability at a small flow rate. However, if unstable inverted oval tubes are joined together, However, there is a problem that a bend (inclination of the pipe) is inevitable, it takes a lot of trouble to correct the bend , and the cost is increased due to difficult construction.

In the conventional sewage pipe construction work, the vertical centering of the pipe is performed while confirming the pipe top level with an L-shaped ruler according to the construction guidelines of the Japan Sewerage Association, and the horizontal centering is performed. , The work was carried out by adjusting the pipe so that the centering marks on the top and bottom of the pipe attached to the end face of the oval pipe and the bottom line would match.

[0004]

In this method, for example, as shown in FIG. 3, when the slanted oval tube 11 is centered on the tube floor 10, it is placed on the slanted side of the excavated surface of the iron sheet pile 12 or the like. The firm tree 13 was applied, and while the oval tube 11 was moved in the direction of the arrow, the firm tree 14 on the opposite side was gradually moved to raise it vertically to correct the inclination.

However, the surface of the oval tube is manufactured by extrusion molding of a hard vinyl chloride resin, for example, and it is very slippery, and the tube cannot be adjusted unless a tool such as an L-shaped ruler is used each time.

[Means for Solving the Problems]

An object of the present invention is to provide a device for correcting the inclination of an oval tube which can solve the conventional problems, and its gist is to provide a level and / or a tube top point on a smooth top surface. It has an arch-shaped upper member and a U-shaped lower support member having a smooth bottom surface that is joined to the arch-shaped upper member
An inner surface that is integrated by screws that penetrate the joint end pieces that project outward and that is in close contact with the outer circumference of the oval tube and the outer circumference of the oval tube.
An oval canal straightening device having a similar outer surface .

Hereinafter, a diagram showing an embodiment of the present invention will be described in detail. FIG. 1 (a) shows the inclination correction of the oval tube of the present invention.
Plan view of the ingredients, (b) the line X-X in along a longitudinal sectional view, the inclination correction device 1 of the oval tube of the present invention is arched upper member 2 and the U-shaped lower support member (a) 3 and 3 and are joined and integrated by tightening a grip handle screw 5 penetrating each joining end piece 4. The top 6 of the arched upper member 2 is smooth and provided with a level 7 and / or a tube top point 8. The U-shaped lower support member 3 has a smooth bottom portion 9. For arched upper member 2 and U-shaped lower support member 3
Has a connecting end piece 4 projecting outward. The inner surface of the straightening tool 1 for the oval tube 11 according to the present invention has a shape that closely surrounds the outer circumference of the oval tube without deforming it.
The vicinity of the maximum width portion of the egg shape is used as the connecting portion of the upper and lower members. The outer surface of the inclination correction tool for the oval tube is the top portion 6 of the upper member 2.
And the bottom part of the lower support member 3 and each joining end piece 4,
It is similar to the outer circumference of the oval canal.

FIG. 2 shows a state where the inclination correcting tool 1 for the oval tube 11 of the present invention is mounted so as to closely surround the outer circumference of the inclined oval tube 11. The correction tool 1 is attached as follows.
First, only the U-shaped lower support member 3 is tilted in the longitudinal direction of the oval tube 11 to be inserted into the lower part of the oval tube and then lifted.
The arch-shaped upper member 2 is applied so that the joining end pieces 4 projecting outward are aligned with each other, and a screw penetrating each joining end piece 4, preferably a grip handle screw 5, is tightened to integrate the two. For grip handle screws,
Workability is good because it is not necessary to prepare a spanner separately. It should be noted that the connecting portion does not necessarily have to have the largest oval portion unless the oval tube is deformed after attachment. In this case, there is a slight push when applying the upper or lower support member .

In order to correct the inclined oval tube 11 shown in FIG. 2 to a normal vertical position, while watching the inclination with the level 7,
It is possible to easily install the oval tube 11 in the vertical direction by moving the solid wood 13 in the direction of the arrow on the bottom 9 of the lower support member 3 while moving the solid wood 13 to raise the upper member 2.
In this case, since the oval tube can be operated while grasping the joint end piece or the grip handle screw 5 for tightening, the construction person can adjust the inclination by paying attention to the level 7 or the tube top point 8 so that the work can be performed more than before. Is also much easier.

On the top 6 of the arch-shaped upper member 2, a level 7 or a pipe top point 8 may be provided side by side. Since the pipe top point 8 is engraved with a cross, the vertical line can be obtained by using the downward swing.

[0011]

According to the present invention, there is no need for an L-shaped ruler as in the prior art, and mounting and dismounting and tilt adjustment are simple, so the construction is simplified.

[Brief description of drawings]

FIG. 1 (a) is a plan view of an oval canal straightening device of the present invention, and FIG. 1 (b) is a longitudinal sectional view taken along line XX of FIG. 1 (a).

FIG. 2 is an explanatory diagram of the inclination correction work of the oval tube according to the present invention.

[Figure 3] Explanatory view of conventional straightening work for oval tubes

[Explanation of symbols]

1 Tilt correction tool for oval tube 2 Upper member 3 Lower support member 4 Joint end piece 5 Grip handle screw 6 Top 7 Leveler 8 Tube top point 9 Bottom 10 Tube bed 11 Oval tube 12 Iron sheet pile 13 Hariki 14 Hariki

Claims (2)

[Scope of utility model registration request] 1. An arch-shaped upper member having a level and / or a tube-top point on a smooth top surface, and a U-shaped lower support member having a smooth bottom surface coupled to the arch-shaped upper member, which are provided outside the both members. Inner surface that is integrated by screws that penetrate each protruding end piece and that is in close contact with the outer circumference of the oval tube and outer circumference of the oval tube
And an outer surface similar to the above . 2. An arcuate upper member at the maximum width portion of the oval tube.
The inclination correction tool for an oval tube according to claim 1, wherein the inclination correction tool is coupled to a U-shaped lower support member.