JP2001349470A - Uneven force supporting device in pipeline - Google Patents

Abstract

PROBLEM TO BE SOLVED: To protect a pipeline by surely supporting uneven force in it. SOLUTION: This device comprises a frame 11 fixed to a foundation part 12, and fixing devices 23 to fix a pipe body 3 to the frame 11. The fixing device 23 comprises a wedge body 20 pressed toward an outer surface of the pipe body 3 by pressing force of a bolt 21 applied from the frame 11 toward the pipe body 3 for prohibiting the pipe body 3 from moving to the frame 11 in a pipe axis direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for supporting an uneven force in a pipeline.

[0002]

2. Description of the Related Art In a bent portion of a pipeline, for example,
A non-average force due to water pressure acts, and due to the non-average force, a force in the direction of entering or exiting the joint portion of the pipeline acts. In order to prevent the pipeline from being adversely affected by such a force, measures such as casting protective concrete for supporting the pipeline are taken.

For example, in a pipe 2 exposed inside a common groove 1 as shown in FIGS. 6 and 7, this pipe 2 is formed by a bent pipe as shown in the drawing, and an uneven force is generated by water pressure in the pipe. In this case, based on the non-average force, the joint portion 4 of the plurality of pipes 3 forming the pipe 2 is used.
, A force in the pipe axis direction, that is, a force in the entry direction or the exit direction acts. In the common groove 1 shown in FIGS. 6 and 7, the concrete frame 5 is brought into close contact with the pipe 3 so that the pipe 5 is not adversely affected by such a force. Protective works are constructed by using reinforced concrete containing 6 pieces.

[0004]

However, in the case of piping in a limited space such as the common groove 1, it is often difficult to provide a predetermined reinforced concrete protection. In addition, when water pressure in the pipe is changed due to various conditions after construction, reinforcement of concrete protection is often required, but the reinforcement work is often difficult.

[0005] On the other hand, protection is also provided by fixing a steel band around the pipe with bolts, but in this case, a frictional resistance between the band and the pipe is expected. Because it is a system, it is not always appropriate to reliably protect against uneven force.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a protection system capable of reliably supporting an average force in a pipeline.

[0007]

In order to achieve the above object, the present invention comprises a frame fixed to a base portion and a fixing device for fixing a tube to the frame, and the fixing device is provided with a frame. A wedge body is provided that can be prevented from moving in the tube axis direction with respect to the frame by being pressed against the outer surface of the tube by a pressing force applied to the tube. .

[0008] With such a configuration, the wedge body pressed against the outer surface of the tube body surely integrates the tube with the frame. In addition, since the wedge body is used, the movement of the pipe body in the pipe axis direction due to the non-average force is reliably prevented. Therefore, a strong protective work can be provided.

[0009]

In FIG. 5, reference numeral 2 denotes a pipe exposed inside a common groove, 3 denotes a pipe thereof, and 4 denotes a joint thereof, which are the same as those shown in FIGS. 6 and 7. It is.
The pipe 3 constituting the pipe 2 is formed by a bent pipe.

A plurality of frames 11 are provided in a portion of the pipe 2 exposed inside the common groove, corresponding to an appropriate position of the pipe body 3 excluding the joint portion 4, for example, a position near the joint portion 4. ing.

In detail, as shown in FIGS. 1 to 4, a base concrete 12 constituting a base portion of a common groove is provided with:
The frame 11 made of cast iron or the like is fixed using the anchor bolt 13. Instead of the base concrete 12, the frame 11 can be
Can also be fixed.

The frame 11 is provided with an anchor bolt 13
A horizontal plate-shaped mounting seat 14 fixed to the base concrete 12 by the above, a vertical pipe support 15 rising upward from the mounting seat 14, and the mounting seat 14 and the pipe support 15. It is configured to integrally have a tube axial rib 16 provided therebetween.

The pipe support 15 is formed with a circular hole 17 through which the pipe 3 of the horizontal pipe 2 passes through the pipe support 15. Around the hole 17 on one surface and the other surface of the tube support portion 15, a plurality of wedge body housing portions 18A and 18B are formed integrally with the tube support portion 15, respectively.

Each of the wedge body accommodating portions 18A and 18B is formed so as to protrude from the tube support portion 15 in the tube axis direction, and as shown in FIG. A wedge body receiving recess 19 facing the outer surface of the body 3 is formed. A wedge body 20 is accommodated in each wedge body accommodating recess 19. The wedge body 20 is formed of a metal material, and is formed in a wedge shape in which the wall thickness decreases as the distance from the tube support 15 in the tube axis direction increases.

Reference numeral 21 denotes a push bolt, which is a wedge body accommodation portion 18.
A and 18B are screwed into the wall portions in a penetrating state, so that the tip ends reach the accommodation concave portion 19 and the wedge body 20
Is pressed toward the outer surface of the tube 3. Reference numeral 22 denotes a head of the push bolt 21. The wedge body 20 is configured such that one surface thereof is in contact with the outer surface of the tubular body 3 and the other surface is pressed by the tip surface of the push bolt 21.
For this reason, the push bolt 21 is arranged in a state of being inclined with respect to the pipe body 3 in accordance with the shape of the wedge body 20.
A caulking material 22 shown in FIG. 2 is used to fill the gap between the outer surfaces of the wedge body housing portions 18A and 18B and the outer surface of the tubular body 3 to prevent corrosion. Thus, the fixing device 23 is configured.

In such a configuration, when supporting the tubular body 3 inside the common groove, the frame 11 is fixed to a predetermined position of the base concrete 12 using the anchor bolts 13, and The pipe 2 is laid with the pipe 3 passing through the hole 17 of the pipe support 15. The pipe support 15 may be divided into two parts in the circumferential direction along the periphery of the hole 17. In this case, the pipe 3 is covered with the upper half of the pipe support 15 after the pipe 2 is laid. It is constructed as follows. Before passing the tube 3 through the hole 17, the wedge body 20 is housed in the housing portions 18A and 18B in advance and temporarily fixed by appropriate means.

Next, the push bolt 21 is rotated, and the wedge body 20 is pressed by the push bolt 21. Then
The wedge body 20 is sandwiched between the push bolt 21 and the tube body 3 and is pressed. That is, it is sandwiched and pressed between the frame 11 and the tube body 3 via the wedge body housing portions 18A and 18B and the tube support portion 15.

Thus, the tube 3 is securely fixed to the frame 11 and integrated. Therefore, the non-average force of a certain magnitude can be resisted by the pressing and fixing force using the pressing bolt 21 as described above. When the non-average force becomes extremely large, the tube 3 acts so as to escape from the joint portion 4, whereby the tube 3 is connected to the frame 11.
To move in the pipe axis direction. However, as described above, the wedge bodies 20 accommodated in the pair of accommodation sections 18A and 18B each become thinner as the distance from the tube support section 15 of the frame 11 in the tube axis direction increases. Therefore, no matter which direction the tube 3 moves in either direction, one of the wedges 2
0 acts in the biting direction. Therefore, it is possible to reliably prevent such a movement of the tube body 3 and receive the non-average force. For this reason, a strong protective work can be achieved.

[0019]

As described above, according to the present invention, there is provided a frame fixed to the base portion, and a fixing device for fixing the tube to the frame, and the fixing device moves from the frame toward the tube. The wedge is configured to be able to prevent the tube from moving in the tube axis direction with respect to the frame by being pressed against the outer surface of the tube by the applied pressing force, so that the wedge is pressed against the outer surface of the tube. By the wedge body, this pipe body and the frame can be reliably integrated, and since the wedge body is used, the movement of the pipe body in the pipe axis direction based on the non-average force can be reliably prevented, Therefore, a strong protective work can be provided.

[Brief description of the drawings]

FIG. 1 is a side view of a device for supporting an uneven force in a pipe according to an embodiment of the present invention.

FIG. 2 is a longitudinal sectional view of a main part of the apparatus.

FIG. 3 is a front view of the same device.

FIG. 4 is a plan view of the same device.

FIG. 5 is a plan view showing an example of a common in-groove pipe using the same device.

FIG. 6 is a plan view showing an example of a conventional pipe in a common groove.

FIG. 7 is a side view of the portion shown in FIG. 6;

[Explanation of symbols]

 Reference Signs List 3 tube 11 frame 12 base concrete 18A wedge body storage part 18B wedge body storage part 20 wedge body 21 push bolt 23 fixing device

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Katsumi Temma 1-10-17 Nihonbashi-Horidome-cho, Chuo-ku, Tokyo Inside Kubotek Co., Ltd. (72) Inventor Masashi Ishiashi 2-18 Kanda Sakumacho, Chiyoda-ku, Tokyo F-term in Nansui Design Office (reference) 3H023 AA05 AB07 AC75 AD27 AD34 AD55

Claims (1)

[Claims] 1. A frame fixed to a base portion, and a fixing device for fixing a tube to the frame, wherein the fixing device is configured such that a pressing force applied from the frame to the tube causes the tube to be fixed. A support device for non-average force in a pipe line, characterized by having a wedge body capable of preventing the pipe body from moving in the pipe axis direction with respect to the frame by being pressed against the outer surface.